No, I don't 'DIY' - I'd just think of 'you can do it if you B&Q it' 
I didn't make a conscious decision really, it just kind of happened as I had different priorities after I became single and I wouldn't want to share my house with anybody. I miss the cuddles and hugs but don't miss the sex - I share my bed with lovely bed linen and a soft snuggly duvet instead.
Recently I have seen a couple of people, one who I am thinking about now, who I find attractive but I won't be acting upon it.