Goodness, I don't post here much, but do read quite often, and this is me. But, at 30, we (my wife and I) are also chasing around a 4 year old, 2 year old, and a 6 week old (not much chasing necessary there). I get in that same funk, but mine is usually tied to the weather. Right now, we are on day 3 of rain, and it's going to rain more tonight. That means nothing to be done outside with the kids, it's gloomy, it gets dark early, my 4 year old is tired from school during the day, and my 2 year old is, well...a 2 year old. She can be fun, but she can be crabby. Our baby doesn't sleep, like, at all. So, we're tired.
Sometimes we struggle to find things that are fun as we are located in a tiny, little rural Iowa town. We play golf together (not much this year, she was a bit preggers and hated the heat), go out with friends, have friends over, play dates for the kids (with adult time for the parents). Hopefully, we'll get back into ice fishing together a few times this winter, which is always super entertaining, honestly.
Fall is tough because if it's nice out, we're in the field, so I'm working my 9 hours at work and tacking on anywhere from 3-6 or 8 hours more at night, sometimes taking my PTO and just putting in 15-16 hour days trying to get the crop out. That is when "our" time really gets limited, where I get tired, where she gets tired, because she has the hard job, chasing the kids, and we can really grind to a halt.