I didn't think about it, just figured it was how you fed babies, unless for some drastic reason you couldn't, then you used bottles.
Had my first daughter at 35-6 weeks and was a struggle in the early weeks some days feeding on and off for 18 hours out of 24 but it worked out and 2-1/2 years on still doing it. I think the fact that she was early and small made me more determined to give her the good stuff and the closeness of never being put down and basically just being strapped to me, on and off the breast all day.
It shaped how I mothered her and still do.
It does have its downsides -- for me, it was that it was connected to sleep and after about 18 months it was getting me down that I was doing long feeding-to-sleep settling and resettling through the night. But we stuck with it, didn't want to sever the link as I was returning to part time work, leaving her with my husband. Wanted the continuity. Now, I don't breastfeed to sleep anymore and apart from the pain of feeding while pregnant.
It also stopped my period for 2 years. A bonus for some but I was wanting to try for another child
Weight? I lost 3 stone of the 4 stone I put on very very quickly -- partly having had a section, you sometimes lose your appetite, but I think the feeding made me hang on to the remainder and I only lost the last stone when I got pregnant again and I've stayed 8.10 stone for the whole six months.
Now, if you'd told me (yes, I used to say 'bitty' if I saw toddlers feeding) 3 years ago I'd be feeding a 2-1/2 year old, while 6 months pregnant, planning on tandeming, I'd have laughed long and hard. I'd have been really surprised.
So don't second guess how you'll feel about it. It's I guess a bit 'strange' for about, erm, 30 seconds, then you're so bloody anxious it's going right or wrong, you don't care!