No. One you have for 2-3 years and people assume that you own it.
One you have for 2-3 days and nobody cares what rental car you drive in Miami.
Well, if all you care about is what other people think, then it's an entirely different conversation.
And just for the record, I do find it repulsive that people will care more about their own luxury (even if it is for a short term rental) than they care about principles and morals. Don't get me wrong, I am not criticizing you, just setting the record straight regarding your statement that "nobody cares what rental car you drive in Miami"
When there is no other option, I don't think I have a problem with it. For example, people living in certain European countries might find German cars more available, with better local service etc. Another example is Car2go, there simply isn't anything else like it (though if it actually had the 3 pointed star on the front of the cars I guess I would have more of a problem).