Part way through the hellish first year somebody asked me a similar question (after commenting the first year is brutal) “if you could go back in time and tell yourself about how hard this is would it have changed your mind?”, my answer was and still is “my previous self wouldn’t be able to understand”.
My friend took this to mean I regret having and kid and wish I hadn’t; that isn’t the case, my point was it’s just hard and different in ways you can’t convey to somebody without kids and also there is no way to prepare you for it. There is a feeling in society in general that having a baby is beautiful and affirming etc and either you want to have kids and it’ll be great or you don’t want to have kids and it’ll be hard, it’s just not that simple.
We wanted to have kids, we also would have been ok not having kids too if that’s how the cookie crumbled, we tried and had one and he’s awesome. I think my point here is don’t overthink it, you can’t think yourself through this one :)
My advice would be lean on your support network early and often, we felt we had to be strong and shoulder through it ourselves and I do regret that.