I remember when my first child was born ... Me and my wife have been together since we were 15 and 16, and we had our first when we were 21 and 22. Our first child was planned and we'd wanted a baby for a while before that. My wife had a C section because our daughter was breach, so the first few days after she was born, I was doing the feeding, changing, getting up in the night ... I never realised how demanding a tiny little person could be!!! I was exhausted and i used to gag and dirty nappies when changing them, and the sound of her cry every five minutes irritated the hell out of me! I have to admit, I said to my wife a few times ''God, I never thought it'd be this stressful!'' and ''How do we turn this thing off?!'' and other stuff along those lines ....
Me and my wife both worked part time so that one of us was always their to look after our daughter ...
When our daughter was one she could walk and say a few words. It was one of the proudest days when she learnt how to walk, then after a few days we realised how much harder work it would be. Constantly running off and getting into mischief!!! Do you think the posotive side of walking is that you don't have to carry them around all the time? I thought that too ... I was wrong however, it was just the same except she was heavier! Haha!
I remember at easter we had the easter eggs for my neices and nephews in the kitchen, she was about 2 at this point ... she was in the kitchen colouring and me and i went upstairs for five minutes, when i got back downstairs she'd drawn 'daddy' on the fridge in felt tip pen, and started eating my nephews easter egg!
I could go on about stories like that ....
But at the end of the day they're your kids and you love them and wouldn't change them for the world! All the naughty things she used to do would in my head make me want to laugh, because it was so innocent!!
So to answer your question...
Was it worth it? ... Every second!