Childfree by choice here too. Never really felt the urge, not good with kids, enjoy time to myself and doing what I want and also I have some mental health issues (mostly under control now) that would mean looking after a child was too stressful and Not.A.Good.Idea. Also would hate to inflict a kid with any issues themselves. Raising children is expensive (and it doesn't necessarily end when they hit 18 either) and there's enough kids (and people in general) in the world without me adding to it. Overpopulation worries me, and lack of jobs and opportunities for young people. Not to mention climate change and other sad things that happen.
Occasionally I feel a little sad that I won't "have a family" because that's what people do and the pressure is great to join in but I don't think I'm wired for having kids. I don't think I'd trust myself not to do something (accidentally) neglectful or end up harming myself because I couldn't handle the pressure. I'm the first to jump in there if I see a child about to do something dangerous (often when parent is too busy on phone) but I'm so scatterbrained I'd probably end up leaving it in the house alone!
I look at people at work juggling childcare with work and don't know how they do it. I think I'd be pulling my hair out. Things come up sometimes at work, late on and I guess you just have to say sorry I can't stay on I have to pick up [kid] from wherever? Or try to get a babysitter. Lucky if you have people who can help. I'm very disorganised, always late. Can't imagine having someone else to get ready as well.
DB has 3 kids and I see them once a month or so and occasionally babysit. I enjoy spending time with them in small doses but am glad to come home to my silent house. The amount of plastic kid crap in their house bothers me, they have so many toys they could open up a toy shop. My partner has a child but doesn't see them very often, he didn't want kids to start with and doesn't want anymore (he said he might give me one if I wanted one, I said no thanks). Both of us enjoy peace and quiet, a shrieking child wouldn't be a great home environment.
I also do some volunteering with kids occasionally. And spend time with friends' kids. That's enough for me.
I'm not well off by any means but I have been able to save up and go on holiday to different places every now and then, which I love. I wouldn't want to sacrifice travel for looking after a kid. I try to balance doing with not doing stuff. Also love being out in nature, in forests and stuff.
I don't have any pets at the moment but would like one again soon, I enjoy animal company rather than human. I'm never really sure how to deal with kids, like when one stands there staring at me haha, what's that all about? Other people are right in their making jokes or small talk with the kid but unless I know them well I don't bother really. I feel a bit awkward doing that.
I have a couple of friends who don't have kids (one would like them, not sure about the other) and a good friend who has a grown up kid and says I'm being sensible in not having any, she wouldn't if she could turn back time (and her kid is a nice one). My mother used to make a fuss about me choosing not to, ditto another friend but I think they've (mostly) given up asking me now. Life is to be enjoyed and there is more than one way to live :)