my baby is not far off yours in age, and (i think like you?) we waited a long time for her. We were quite set in our ways before we had the huge unpredictable life changing scenario that children bring. Although i love spending time with her, sometimes i find it rather onerous to be in charge of the health, happiness and well being of a child for long stretches of time (especially as she's just decided that naps are for wimps!). She is in nursery every weekday so this is weekends i'm mainly talking about (oh no, quick ferlew, report me to social services!)
She's also at the age where she can't play by herself or in her room for example, so needs a lot of attention.
Just at the moment, my husband has taken her out, but as i'm poorly i've been allowed a few hours off :). I expect when he comes back, she'll have knackered him out and i'll take over for a bit