I had an emcs but medically speaking the same as an elective as I had an epidural not a GA.
I don't think you're being selfish, I think you don't understand that there's a huge difference between a vaginal birth (how things are meant to work and what your body is prepared for) and a MAJOR surgery. I think you're underestimating how difficult having a c section will make life for you when it's just you and baby.
I don't regret having a cs without it dd and I both likely wouldn't be here.
BUT
It takes a LOT longer to recover from a cs. Generally recovery from a vaginal birth takes days. Recovery from a section takes AT LEAST 6 weeks, and means a longer stay in hospital too, which could hamper bonding with baby which you're already worried about. I was kept in for a week (as was dd as it happened) and still felt pretty wobbly when I went home - and I had a husband to help me.
The recovery and injury means you are very restricted what you can do. If you're going to be on your own with the baby this is not practical and will make YOUR life harder. I was fine while then dh was home, once he had to go back to work it became very frustrating.
Your body will be permanently changed with a cs. It's a significant if hidden scar, they can't do it by keyhole surgery! The stomach muscles are cut and are NEVER the same again - you can do all the slimming, planks and stomach crunches you like, still won't have a stomach like you had pre section.
If you're planning to bf (and if you're about to become single it's certainly a damn site cheaper than formula, bottles, steriliser etc) it often takes longer for milk to come in if you have a section.
It is of course your personal decision but it's good you posted as you need to make an informed decision and currently I don't think you are.