If you have got it..SALUTE!
If you have not but want it...DONT!
If you are in the middle of it...Good Luck!
If you are just about starting off...RUN!! Run away and never look back.
It is a tough thing to do possibly because it is the highest degree anyone can ever study for. But is aint easy and after the primary research is done, it aint fun either!! Slogging and re-writing, editing and then doing spin cycles of the same thing is tiring and taxing! Not fun! Not fun at all. Just for two measly letters 'Dr' you shall need to work your butt off. You are born with 2/3/4 letters in from of your name Mr/ Ms/Miss/Mrs..why work to change them?