Is there never room to apply reason to someone's opinion?
In some cases there might be. I don’t think this is one of them. If you disagree, I’d be intrigued as to why.
What would happen if everyone decided that childbirth was too 'horrifying'? (We'd be extinct in a generation exactly)
And if everyone decided to reproduce, the already overpopulated planet would die of starvation. Fortunately, nobody is suggesting either of these extremes. Some people want to procreate (too many, according to numerous environmental experts), and some don’t.
Over 50% of women at aged 30 are now childless, so obviously a lot of people share this opinion that it is too horrifying to go through,
In the U.K., the percentage of women who remain childless at the end of their childbearing years remains 18.1%. So women are delaying childbearing rather than not having children and the same percentage of women are giving birth as in previous generations.
however I don't think it is helpful for this opinion to be 'just validated' without any questions.
Why? And, unless you are proposing to carry and birth said children for them, what makes your opinion on other women’s attitudes towards childbearing at all pertinent?
Yes it's hard, but a straight up 'horrifying' is not really a valid opinion from someone who has never done it?
Yes, it is. I’ve never sky dived or eaten faeces, as I find those things horrifying. I don’t need to justify that or experience them. I’ll just not do them. As is my right.
Your opinion that it isn’t horrifying for someone else holds exactly no merit, as you’re not that person. It isn’t horrifying for you. Grand, have as many kids as you like.