Hello, I'm also joining this thread! I'm 40, my husband is 46, and we have a daughter who's almost six months old. We were actually quite happy for 11 years together as a childfree couple, but when I got into my late 30s, we started "not trying to not conceive." :) After one miscarriage in summer 2009, our daughter was born around Thanksgiving 2011.
I know that "man plans, God laughs", but right now we're not planning to have any more children, and my husband is thinking about getting a vasectomy. Considering our advanced ages with this child - and considering that I'm also caring for my mom, who's in a wheelchair - I think it's best to be able to focus our energy and resources on the one child we have now.
I've heard other parents of onlies echo what pickle18 said - you can "take your child everywhere". What age does that start at? ;)
It seems like A will tolerate a couple hours in the carseat or sling at most, before she starts to get seriously overstimulated and overtired. (She's very quiet, in a "shock and awe" way, while she's outside the house, but when we get her home after a too-long outing, she SCREAMS, sometimes for hours, and won't nap.)
I'd love to be one of these mamas I see who can babywear all day long, in the city, at a festival, etc. without running back home so their babies can sleep and decompress.
Maybe their babies are just more extroverted than ours? Or older? (A is also pretty large for her age - 85th percentile for both height and weight - so it's possible my expectations are skewed.)