I think you have to do what’s right for you, and that’s you as a whole person with feelings, not just what is the best physical option. It can be reassuring to know there is a plan in place in terms of the birth, and how certain scenarios would be handled.
For me, some of it was about what I wanted to avoid - I had an EMCS after a badly handled failed induction first time round, and eventually went for an ELCS second time round as I just didn’t have any confidence in my own body after that, and in how certain scenarios (slow progress, possible need for instruments, tearing) would be handled on the day. The best way for me to avoid those was the section. In some ways it was an easier decision for me because I’d already had one so I already had “damage” in one area, if you see what I mean.
If you want one, push. And push back on badly handled conversations around risk. The consultant and midwife we spoke to were very keen to quote all the negative stats around c sections and all the positives around vaginal births. Did you know that most women are as “recovered as they’ll get” within 2-3 days of a vaginal birth? No, me neither, nor any of my friends who gave birth vaginally. 
ELCS are statistically very safe and previous birth trauma/maternal mental health is as valid a reason as any to have one. “I want one” is a perfectly valid reason if you’ve weighed up the risks of both options! There is no risk free way of giving birth.
I found the recovery harder after my second section but neither were difficult. You do need to keep on top of pain relief but I was certainly able to go for short walks after a week or so and felt pretty normal after six weeks first time round and maybe eight weeks second time round.