I only buy if I like (and can afford!) but also often buy if I am intrigued..... I love seeing something in a charity shop or boot sale, buying it and then spending hours researching and trying to discover what I have! Get a great 'buzz' if I am able to solve the mystery! Obviously not always sucessful and have some pieces that I have still to identify and go back to again and again!
Then sometimes I come across something online or in a book when I am not looking for it, that resolves an old puzzle and it is very exciting! By constantly researching I find I am learning so much about glass that I don't own and am able to identify more and more. I think it is an addiction..
Oh, ladies... toyboys...... No no no..... give me an older man any day of week...!