I didn't want an engagement ring. I don't like the way that society encourages women to declare their marital status all the time but men don't have to - i.e. women become Mrs and there are many men who don't wear an engagement ring. But Hubby was adamant that I had one so I got him one too. We both had wedding rings as well.
I used to wear them all the time until I started working in a lab. Rings are dangerous when you are playing with chemicals that can either damange them or get underneath and damage your skin. To start with I used to take them off when I got to work and out them back on when I left.
Then I took up running. When I run my fingers swell up and the rings got uncomfortably tight so I had to take them off before running.
Then I started OW swimming, which makes your fingers shrink and then you risk losing the rings in the water.
In the end I found myself wearing them for so little time that it seemed pointless, and I was always losing them as I couldn't rememebr which bag/drawer I had left them in. So I stopped wearing them except on special occassions.
As for whether I would still wear them now that I am separated... well, I probably would as I don't hate my Hubby and like Seren I don't place any marital value on the rings. They are nice pieces of jewelery that my Hubby bought me for a special occassion and therefore just as valuable or worthless as the things he bought me for Christmas, birthdays and aniversaries. If I threw out all the things he bought me I wouldn't have much left as I'm not a materialistic person and don't tend to buy much for myself.
I would probably stop wearing the wedding ring when I met someone else, but I always wore my engagement ring on the wrong hand and will probably continue to do so occassioanlly.