Conservatives generally believe that the accumulation and maintenance of wealth is a good thing. We like money, we admire success, and we don't view those who've achieved a significant fortune with contempt. We're aware that well-funded bank accounts provide employment, stimulate the economy, and keep the country humming along.
The left disagrees. If you're rich, you aren't paying your fair share. Heck, even if you're not rich you should be taxed more. To them, the wealthy are like dragons - sleeping on a mountain of ill-gotten gold - lording over the peasants with filthy, probably-stolen, lucre that they couldn't spend in a hundred lifetimes. No one needs all that cash, and really you should only have what you the government decides you should be allowed to keep.
