Quite a lot of contemporary research flatly contradicts your opinion.
No it isn't. That definition would include groups such as the blind, the deaf, paraplegics, etc.
If you are going to try and argue by definition, make some effort to get the definition right.
That sounds like it has come from someone who doesn't have a lot of sexual experience, to be quite frank.
Not that it really matters since anecdote and opinion aren't scientifically persuasive even with the weight of personal experience added on top.
Fail. Sorry.