Do I really need two bikes - one for road cycling and one for daily use?
I don't think that we would all agree on an answer to the question about whether it is ethical to have more than one bike; opinions vary.  Many of us here on this web site have more than one bicycle, so I would say that in many parts of the world, owning more than one bicycle is common.  Many of us joke that the correct number of bikes to own is n + 1, where n is the number currently owned, but we are kidding.  Whether you need a second bike is a question that only you can answer.

Some people only wish to own one bicycle, so they disguise a nice bicycle with a bad paint job to look like a low-quality bicycle.