God I really don't like to think of my daughters sex life, but she was brought up with open affection. Again possibly because I wasn't.
I'm more tactile than my husband, so for example a couple of weeks ago when she was home, she was sitting on the floor playing play station and I wrestled her down, body surfed her and gave her cuddles and kisses. That was common for her growing up, affection shown in a fun way, as welll as the comforting ones.
My husband would never do that, but she always cuddles up to him on the sofa watching tv, and asks for shoulder or foot massages, and he happily obliges, where as I do ten seconds then tell her to bugger off as I'm bored.
I think you either openly show affection or you don't. And that's more about you as a person than whether you work or not. I really think it's a shame if kids grow up without outward displays of affection and could easily believe it impacts them as adults.
I also suspect being an only child impacts as well, youre the one and only, the apple of your parents eyes and the object of all their affections. There is no sibling to compete with. For example our daughter although she went to daycare, she never once had a baby sitter growing up, not once. Either she came with us or we didn't go.
I'm not really sure it was ever a conscious decision never to go out without her, but we simply never wanted to, so we never did. No date nights, no parties, either we went as a three or not at all.