I think I'm fairly thrifty - I've always saved and even when I was touring like crazy and working a lot harder I never really had much actual disposable income or cash hanging about because every penny went towards buying and doing up my flat and then my work flat (neither of which are finished even now) so I've never really had the chance to throw it around. I don't think there's any harm in having treats anyway as long as it's under control, especially if you've spent years doing without but I know I can't keep money in my purse so I bank everything bar what I need for day to day necessities.
I do like nice things, so if I do fork out for something it tends to be expensive but even that feels frugal to me because I know it'll last me a long time. I spend a lot on nice food, but I don't feel that's any bad thing if it keeps me healthy and it was the thing I desperately missed when I was broke.
What I do like is a bargain
. I'll be planning my Black Friday spending in a couple of weeks so I don't get silly with it, but amongst other stuff I'll be booking my London hotels up to April-ish and I have my eye on a fair bit of wireless audio too.