I can only say that my thirties were SO hard and stressful, but my forties are turning out to be 100 times better. There is hope!
Parents getting older - yes, but you learn to appreciate every moment so much more as you get into middle age yourself.
Children getting past cute stage and into tricky teenage years - yep, teenagers are tricky but they’re also fantastic! You’ll have unimaginable freedom once they can do things for themselves, they sleep in, they make themselves snacks, they entertain themselves, you can leave them and go out. And they’re so interesting and you can have great conversations with them. I love my teens!
All the rest of it…well, yes. Life doesn’t get any easier or less complex as you get older and each stage brings downsides. But I am honestly SO much happier at 45 than I was at 35. I’m slimmer, healthier (more time to look after myself), my career is better (it took a massive hit in my early-mid thirties because of having young kids), I have found hobbies and interests away from pubs and clubs and my friendships are stronger than they were in the child rearing years.
Also parent to a child with autism. The early teens were hard, not gonna lie. But at 18, my autistic DC is unrecognisable from how they were as a child and has got the best mental health they’ve ever had as they’ve come to understand themselves and get coping strategies.
Stay hopeful. I personally think the hardest times are the primary school aged years. So demanding of time and energy, so much pressure to be a ‘good mum’ and good at everything else in your life. You come into your own more as your kids grow into young adults and you rediscover yourself. That’s been my experience anyway.