I will give you five reason why i shouldn't have opted for M.Sc......
1.Why further studies yaar? lets go for some professional course if willing to go fo private jobs. or go for Govt. serivices. thats not too difficult to get. why should waste another couple of years.
2.What 3 years of physics done to me? m ruined.. :(
3.How much money i will make in a lecturer job? its limited.. i want to grow higher.
4.I should listen to my Parents. big one...
5.Can I do real good science? lack of self-belief.

Exactly the same situation was 11 years ago. why should i leave my home. On a flooded day Mom asked to leave home and do something i wanted to.. thank god Mom was always there to motivate. and again there is a single reason which can overcome all the give 5 above..
"I wanted to do this"
I find no bigger reason than that.
Wot you guys say??? share your comments..