As someone who some people see as someone with it "handed to them," I actually DO understand your pain.
My family is far from incredibly rich, but we have enough money that I can take lessons and buy horse things without much issue.
What REALLY bothers me is when people don't know what they have. This girl at my barn was at one point FULL LEASING two horses -one cost the owner 40,000! She didn't even ride one of them, and got all pissy when someone rode the not expensive one. Eventually she got kicked off the expensive horse because she COULDN'T RIDE IT. The whole time she was being a brat about it and doing things like hitting the horse for pinning its ears when it saw her. Now the horse is incredibly headshy and pins his ears any time someone comes near him.
So in short, yes, I hate those who have it handed to them. But only if they don't appreciate and love what they have.
"The wise man thinks he knows nothing.
The fool thinks he knows everything."