Edge

Most schools don't let you take it until you've completed 1 full year.  They not only want to discuss your proposed research topic, but make sure that all, or most, of your coursework is complete.

This really depends on your mindset and personality.  Breaking it down you can compartmentalize into three aspects, class, research and life outside of school.
 
Class:  It's class, you have to do your 32-64 credit hours.  Some classes you'll love, some you'll hate, some you'll tolerate.  You'll be stuck in a few group projects which everyone seems to hate.  In my opinion, try not to focus too much on the classes, by all means do the assignments and attend the lectures, I tend to pay more attention to the professors.  Specifically, their teaching styles, how they act, how they command respect/attention, how they lose the attention of the students, etc.  Even if your end goal is not being a professor it doesn't hurt to learn public speaking styles. Is it "enjoyable"?  Sometimes.
 
Research:  Much more important than classes.  After your class hours are completed, this is all you do in school.  This is how you'll spend your time, obtaining research, organizing thoughts and eventually preparing your thesis or research paper.  This is the culmination of your graduate education, a massive 150+ page paper with your name on it that other people in your industry can/will read.  This is your impact in your field so you should focus more on this than on classwork.  Is it "enjoyable"?  That depends on if you like your research topic, if you think you'll be making a difference, if you find your work fulfilling, etc.
 
Life outside of school:  It is what you make of it.  Join some clubs, meet people, make friends.  Is it "enjoyable"?  If you're doing it right, yes.

This really depends on your mindset and personality.  Breaking it down you can compartmentalize into three aspects, class, research and life outside of school.
 
Class:  It's class, you have to do your 32-64 credit hours.  Some classes you'll love, some you'll hate, some you'll tolerate.  You'll be stuck in a few group projects which everyone seems to hate.  In my opinion, try not to focus too much on the classes, by all means do the assignments and attend the lectures, I tend to pay more attention to the professors.  Specifically, their teaching styles, how they act, how they command respect/attention, how they lose the attention of the students, etc.  Even if your end goal is not being a professor it doesn't hurt to learn public speaking styles. Is it "enjoyable"?  Sometimes.
 
Research:  Much more important than classes.  After your class hours are completed, this is all you do in school.  This is how you'll spend your time, obtaining research, organizing thoughts and eventually preparing your thesis or research paper.  This is the culmination of your graduate education, a massive 150+ page paper with your name on it that other people in your industry can/will read.  This is your impact in your field so you should focus more on this than on classwork.  Is it "enjoyable"?  That depends on if you like your research topic, if you think you'll be making a difference, if you find your work fulfilling, etc.
 
Life outside of school:  It is what you make of it.  Join some clubs, meet people, make friends.  Is it "enjoyable"?  If you're doing it right, yes.

This really depends on your mindset and personality.  Breaking it down you can compartmentalize into three aspects, class, research and life outside of school.
 
Class:  It's class, you have to do your 32-64 credit hours.  Some classes you'll love, some you'll hate, some you'll tolerate.  You'll be stuck in a few group projects which everyone seems to hate.  In my opinion, try not to focus too much on the classes, by all means do the assignments and attend the lectures, I tend to pay more attention to the professors.  Specifically, their teaching styles, how they act, how they command respect/attention, how they lose the attention of the students, etc.  Even if your end goal is not being a professor it doesn't hurt to learn public speaking styles. Is it "enjoyable"?  Sometimes.
 
Research:  Much more important than classes.  After your class hours are completed, this is all you do in school.  This is how you'll spend your time, obtaining research, organizing thoughts and eventually preparing your thesis or research paper.  This is the culmination of your graduate education, a massive 150+ page paper with your name on it that other people in your industry can/will read.  This is your impact in your field so you should focus more on this than on classwork.  Is it "enjoyable"?  That depends on if you like your research topic, if you think you'll be making a difference, if you find your work fulfilling, etc.
 
Life outside of school:  It is what you make of it.  Join some clubs, meet people, make friends.  Is it "enjoyable"?  If you're doing it right, yes.