Don't feel bad, it's all part of the road to the things you buy now. I bet each thing tells a story and leads on to the next.
You probably wouldn't even be writing on this forum if you didn't have all that crud on your shelf (or in boxes under your bed/in your loft), it's what makes us 'collector geeks' tick! And you can guarantee the moment you get rid of it, within a year there'll be new interest in whatever it was and either
A- You'll wish you still had it.
or
B- It'll be worth a small fortune, and you virtually gave it away!