It will likely take some time to find a good partner. I don’t think you can postpone til your late 30s and expect to quickly find a good match. Its fine if you’re happy single - but if you think you’re likely to want something different in the future, it’s good to start working towards that, even just a little, now.
Its amazing. Especially if you take it when mom goes back to work. That’s your time to figure out how to be a parent. Not what works for mom or grandparents. Your thing between dad and baby. I figured out I had to take walks around the block to get baby to nap. I think of that sometimes now when she’s big. Also: if they give you shit: say - “I just don’t get why you wouldn’t want to spend more time with your kids.”