I was with XH for 12 years. We had 3 DCs. After we split (mutual decision as we’d tried counselling and realised neither of us was happy with the other) I dated a few guys briefly.
I’d been separated from him about 6 months when I met DP. He’d been separated from the mother of his DCs about the same amount of time.
He’s the absolute polar opposite of XH in almost every way! I don’t know if I was subconsciously looking for that, but it is remarkable how different they are (XH was older, introverted, sensible, frugal, into exercise, didn’t like Tv or films, quite self centred, neat freak - probable ASD. DP is younger than me, extroverted, funny, generous/reckless with money, loves food, loves movies and gaming, loves helping others, messy)
The same could be said of myself and DP’s ex too - total opposites!
He brings me so much joy and happiness and fulfils me in ways XH just couldn’t/didn’t want to. XH is also happier now on his own, as I don’t think he was ever really cut out for a family.
Having children wasn’t an issue when dating - I had plenty of interest from guys, despite having 3 DCs, but of course it does need a little bit of coordinating trying to date when you both have parental responsibilities. We got together with all the DCs reasonably quickly because he had his 50/50 and I had mine 6 nights a week, so there was rarely a free night with no DCs.
I think it’s important to see what someone is like as a parent to really know them as a person and to know if you’re compatible, so I wouldn’t leave it for a year or something, as is often suggested on here, just in case you become close and then have to end it because your DCs hate each other!! Obviously get to know someone well, but actually my DCs hung out with various friends of mine - some female, some male - when I was single, just because I had more free time to socialise, so you don’t have to introduce someone as a potential partner.