I used to be a Logic user and I find that Pro-tools produced music is too sterile, formulaic and doesn't excite me sonically. I use Ardour to record several projects for a variety of acoustic control decisions.
All DAWs can be used as a simple tape deck. Just because Pro Tools gives you certain tools and possibilities doesn't mean you have to use them. The notion that music recorded and mixed in Pro Tools has to have a certain "sound" shows that you still have a bit to learn about the"production process from the instrument all the way to the final mastering stage".
I'd rather have a program like Reaper, which gives me options to go as simple or as complex as I want, than a program like Ardour, that gets in my way and makes things more difficult because the designers didn't have a clear vision of workflow in audio.
If I had all the time in the world and was a Linux zealot, I'd happily use Ardour (as long as I'd never seen what a professional DAW can do). As I said, if all I was doing was being a basement hobbyist Jonathan Coulton, then Ardour would be totally fine. As long as you didn't expect to use professional audio interfaces. Try to use Ardour with an Apollo interface
If your goal is to make music using only OSS software (for some reason), then Ardour is what you want. But Reaper works perfectly well in Wine and is a real DAW. If you want to step up to making music more than a hobby, you'll want to find something better.
Seriously, friend, I've been where you are. Keep an open mind about this. However, if you are married to the idea of Ardour, I'd suggest looking at a product called the Harrison Mixbus. It's based on Ardour if I remember correctly and it's far more refined. When I used Ardour, I found it to make life and the sound a lot better.