Its all about your preference honestly!
I know I'm the kind of guy that doesn't like having a lot of people in my car (especially when I'm going to be lowered) so having 2DRs is more of an excuse not to take people in your car. However the room in the rear seats is huge for a hatchback, even for myself and I'm 6'2 215lbs lol
And also for the difference in weight, from what I have heard (may or not be true have not looked into it) but 2drs are actually heavier then 4drs because the steel used to make the. 2drs is a lot heavier