[stevenwu]

It's now the end of my engineering and I am now occupied with the thoughts of what my life had been if I would have chosen the road not taken.

Isn't it equally as likely that in the alternate universe where you pursued Physics that you would have either been unhappy with the realities of a job in the field (maybe too much scut work, lab work, what have you) or even been facing unemployment?

I ask this because I know a lot of people on the other side of the green grass (people who pursued something not as employable as CS for reasons of passion and have displayed regret about not diving into technology for the ubiquity of it in our present day-to-day)