...the
stock market
They're irrational and can bankrupt you if you're not careful.
...computers
They take too long to warm up and a better model always
comes along once you've already got one.
...Saran Wrap
Useful but clingy.
...horses
Fun to pet and ride but a pain to feed and clean up after.
...parking meters
If you don't feed them with enough money you face serious
consequences.
...fax machines
Useful for one very specific purpose but otherwise just
high-maintenance paperweights.
...political campaign contributors
If you let them talk about themselves long enough you wind
up in bed with them.
...refrigerators
They're always cold and never seem to have a beer when you
need one.
...blue jeans
They look good for a while but eventually they fade and
have to be replaced.
...country western songs
They're annoying, they all sound alike, but if you really
listen to them you'll get depressed and drink a lot.