Maybe think on a bigger scale.
Will it ever be worth it individually? Who knows.. anything can happen.
But on a scale larger than individual families, yes it is worth it. Communities and societies need children. And allthough in the uk it is rarely framed this way anymore, because we all just potter along thinking about ourselves.. raising children is one of the most meaningful contribution that you can possibly make to your community, however large you define that.
Your effort is building the generation that will then take on the mantel and support all of us when we are older, and it is your and all the other parents unpaid labor that will, forge the future adults that all of us will need. Without them there is no society for us to grow old into, systems would collapse and we would all struggle and suffer. Being a parent really is a great contribution to society.
There is someone out there who chose not to have kids, (not people who couldn't) and although they will never admit it, their choice, as envious and free as it may seem to you now, is only possible because of the meaningful and countless hours of work of parents in raising the generation that the childless person needs to support them and keep society running when they are older.
So even if you cant see it as being worth it for yourself personally, on a broader and less individual persoective, it is absolutely worth it.