I'm an overwhelmed miserable father of 2. My sons are 3 and 1 respectively and although I'm grateful for them I resent them equally. Oddly if anything were to happen to either of them I'd be devastated yet I do anything to give myself a break from being around them.
I'm 39 and my neighbor once told me, "having children is the hardest thing you'll ever do with no training". The most honest statement anyone could have given me, having kids is thankless, never ending and difficult work with horrible hours, no vacation and they are expensive! Let's be honest; who'd hang out with someone who sucks on your wife's t***, s**** his pants and expects you to feed them and tend to their every need all the while ruining your sleep!
I wasn't prepared, I like order, cleanliness and freedom all of which you need to realize will be lost when you have children. Simply saying, having kids is a great idea if you're more worried about the needs of others and care little about the needs of yourself. That is not a slight, I liked the life I had built for me and my wife, travel, nice things and lots of intimacy all of which no longer exist. Having kids is forever forfeiting your needs for the needs of your kids, the sacrifice is real.