Carla
I have a list of 90 decks I've sold/traded/gifted. I'm sure every single one of them have been on a "mad about it" thread at one time or the other.
Do I wish I had my money back? Yes, but only in order to buy something else
Tarot decks are really something you have to Use before you know if they sing to you. Some are simply off key and some are just appalling. But if you don't try them you will never know what that really special top twenty, never getting rid of, use often decks are. People pay Way more for formal education they never use at all...we at least use what we've learned for future buying.
I agree with your philosophy. I'm glad I've bought all the decks I've bought, and I'm glad I got rid of the ones I didn't like. I don't think I'll ever have 20 decks that I 'use often', though! Maybe a top 5 for me.