Joining in.
I sometimes get lonely and wish I had someone here with me to share the burdens of life, such as looking at the garden and seeing how much needs doing, or when my car broke down a while back.
Then I remind myself that I just couldn't do it again, not full-time. Every relationship I've been in, I've lost something of myself, be it hobbies, career success, just time to decompress, and ended up miserable as life ended up revolving around everyone apart from myself.
I'm a huge introvert and very happy in my own company, which is in total contrast to my job, in which I deal with large numbers of people every day.
So when I get home, I need time to recharge. I have children (well, one young child, one mid-teen) and I really cherish my time with them just as much as the time I get to myself the week they're at their dad's.
My life is so busy with the kids, work, life admin and my hobbies when I'm on leave that I really couldn't slot anyone in without neglecting a huge chunk of either of those four, and what would be the point in that?
Even if Mr or Mrs Perfect were to walk through my door right now (please no, before getting dressed I look like the stereotypical crazy cat lady) they wouldn't end up more than part-time lovers, regardless of devotion. Living together and marriage are out of the question.