kids I think you have gone about this thread in the wrong way. However, I understand your questioning and what you say about people finding it 'odd' and thinking it's essential.
I'm a single mum. I've had friends (who are, in the majority, no longer friends) who have tried and tried to get me with any man with the ability to say 'hello' to me, because they think I need it, should need it and want it. To go further, I HAD one friend who was convinced that I just needed sex with anyone and suggested paying for an escort for my birthday. This is a friend who knows very well that I'm rather old fashioned and nobody is getting in my underwear!!! She also tried to 'change' me, tell me that I needed to wear more revealing clothes and do things I have zero interest in.
I hated it. I quite like being me! I have zero desire to go and meet random men on the off chance I may like one. I'm fine. However, there is someone I like, naff all happening (sadly), but it wasn't something I ever intended and I certainly wasn't expecting someone to interest me like he does. But I do like the dreams! :)
Anyway, I know there are people out there who see us as having no life because we're single, thinking we need 'a good seeing to' and blah blah blah, and it does get annoying. It does make you wonder if you're seriously abnormal at times, but then I may be abnormal as it's not just a case of parenthood for me, it's just me being me 
But then I always told myself I wouldn't want my son to have a stepdad. I certainly would never have men in and out, ever. As it stands, with my son turning 18 next year there would be no step parent living with him ever now anyway. But should I have had someone special I think my opinion on the matter may well have changed, but I don't know, it's not a simple thing as far as I'm concerned and kids do come first.
I think we can all say what we ideally want, but I think sometimes life just throws something up.
Then again, I too know of single mums who have to get out there and find someone else asap and don't seem to be able to function properly without doing so. They also tend to be the ones who do put their kids on the sideline to a degree. They also tend to be the ones who think it's all about sex!