What's the situation with more permanent types of contraception in the UK? I think people find it hard to have sterilisations etc when young or without kids? You have my sympathy, the pill made me bonkers, the coil was so painful to get in I've been putting off having mine replaced, but then I'm in the 'done at 2 kids but 3 wouldn't be the end of the world' stage of my life, back in my pregnancy would be the end of the world days I definitely was willing to put up waswith contraception side effects.
I agree not having kids is not no effort, I waited until my 30s and put serious effort into not conceiving young. Also the efforts of being an adult living alone and only 1 salary to rely on, no fallback option, noone else at home to take the dog out if you want to go out after work etc.
Life is challenging for everyone at all stages, the challenges are just different.
Although maybe that's part of it, I've been childfree by choice in my 20s, childless not by choice in my 30s abd a parent of babies and small children. I've loved a cat and a dog like they were my children over the course of a decade, I've seen the discrimination actually faced when you put your career first even 'need to settle down soon, you'll be wanting to have children' when at that point all I wanted was a degree and a good job and enough money to pay for an exciting holiday on top of my rent.
Parents, particularly older when starting ones like me, have been childless, we haven't always had children, I spent a decade being expected to work late a d start early, work Xmas, work Easter etc.
Child free people have never faced the specific challenges parents face, so I guess it's a big ask for them to fully understand. I certainly didn't back in the day.