Speaking as someone with infertility working on kid #2 via IVF right now, nothing positive comes out of wanting kids but not being able to have them. (Also with the big disclaimer that adopting children costs just as much if not more, in some way or another...)
There's parent nights out and dates with my partner to rant about toddlers being shits that are nice to have, but my fertility clinic has an MFT on staff and my old fertility clinic had referrals out for therapy and support groups facilitated by therapists. After almost 18 months the first time, too, I worked out a lot of depression and anger through 1:1 therapy weekly for months. I'm heavily relying on those old coping mechanisms, this time around.