It's only bad if either:
1: If you never use it or didn't need it for any reason.
2: It cost more than it was really worth.
Both rules are negated if you have either:
1: More money than you need. AKA more money than sense
2: It is something cool that you just WANT.
I have fallen into 3 of these 4 columns.
These excuses for buying or passing could go on and on, but why bother, just look to see when the next gun show is that you can attend.