I like bags because they are a bit of luxury in the everyday. It's hard to explain, because (like many women here, I think), I don't carry a bag for anyone else. If no one knew it was a high end designer purse, I'd be okay with that. Heck, most people I know don't care a bit about bags and have no idea what I've spent on mine!

But something about picking up that bag and walking out the door with it makes me stand a little taller.
I often hear people lament about "wasting" money on "foolish things" like handbags. But I don't view it as any more of a waste than any other discretionary spending. Some people go to sporting events, others spend money on electronics and video games and some collect antiques. I don't believe one of those is any better than the other. My best friend's husband once rolled his eyes and commented to my husband that he would never let his wife waste money on a bag. Bless him, my husband replied that he would never consider "letting" me do anything, and wasn't that a nice new car he (best friend's hubby) had just bought, while we would never waste money on a car that lost half it's value the minute you drive it off the lot. Shut him up good!
Anyway, back to the question, I like my bags because having them and carrying them makes me happy. Simple as that.