1) Data is not "just software" - an android is something absolutely different than just software

2) There is no chance that you can create an intelligent hologram. A hologram which will be able to KNOW he/she/it is a hologram. A hologram which will be able to correctly react to ANY situation. It's just NOT possible. Not even theoretically. That's the problem. The Doctor was "too perfect" to be real. His reaction most of the time should be "I am not programmed to correctly reply to your question". That has absolutely nothing to do with science fiction, it's just fiction, more precisely a fairytale.

Do you remember the Minuete (? - sorry I can't really remember the correct spelling of her name) character from the Bynar episode from TNG's first season? She was programmed to seduce men, especially Riker and she was GREAT at it. BUT ... when they tried to get any other information from her, her response was something like "I don't know, it's not a part of my programming" - and that is absolutely CORRECT and absolutely BELIEVABLE. The Doctor however was able to react to ANY situation, which is just impossible. Not "impossible NOW", simply IMPOSSIBLE.

Jazz - well, everybody likes different music and different historical eras, that's absolutely normal. But as I said I can't stand songs in movies or TV shows. Vic was singing, that means in my view he was wasting my time. Simple as that.