I think you have to do what feels right for you.

I tried to BF DS and it was just awful. so I quit. then I chose to FF DD from birth - and didn't encounter any snide comments or anything (and the only thing I feel bad about is not expressing from the get go - I tried from 5 weeks to 8 weeks but was too hard with a toddler to continue)

This next one I will try to BF - so I am constantly changing my mind - to do what I feel most comfortable with, what suits us as a family - not just individuals.

Its always going to be your decision, and you should only feel bad about it IF its not the right one for you (ie pressured by other people etc).

Go with your gut.