When to have another??

Looking for advice/opinions on mamas with 2 or more kids!! Hubs and I always wanted two kids. And we always wanted them about 3 years apart. Im sure it’s because our little guy turned one, but the baby fever has been SO real the past few weeks. We’ve been talking more and more about, well if it happens, it happens. And my thoughts are so back and forth when it really comes down to it. I’d love for our guy to be out of diapers or at least on the transition out of them when we have our next. And kinda understand that he’s going to have a sibling. Then on the other hand it took 9 months of peeing on every ovulation stick possible and trying to get the timing right. (I know it can take healthy couples up to a year) but we did get super discouraged, month after month when AF showed up. I’m still breastfeeding and I don’t really plan to stop until he’s ready. So my periods are irregular still. I guess what I’m asking is if you have two or more children, what’s the age difference and are you happy about it? What’s the best part/hardest part of it? Would you change anything about it if you could? I’d love some insight!