I too would have to say that the main thing that drew me in to the world of straight razor shaving was initially the 'cool' factor.
But once I got started, this little 'hobby' of mine has completely changed the direction of my life. After I started collecting razors and doing little bits of restoration on them I realized how much I enjoyed working with tools, power tools, etc. At the time I was studying Commerce and on my way to getting a degree which I really wasn't finding very interesting and did not really feel like I had much purpose in life. I've since made a lot of radical changes to my life plan and am now studying a pre-apprenticeship in Engineering Studies (Fitting and Machining) while I'm also taking a weekend course in Blacksmithing, and for the first time in my life I'm actually looking forward to going to school because I'm learning about things that I find useful and interesting and I can't wait to start working also. It is likely that I wouldn't have made this realization were it not for this forum so I am eternally grateful to everyone on here and Lynn for starting up SRP in the first place.

I seem to have gotten off topic now but yeah, a big advantage of straight razors for me is that it's actually fun to shave now instead of just being something I have to do.