1. PC - still the most powerful, adaptable and competitive platform around.
2. PS3 - started out as the underdog compared to 360 in my eyes but eventually endeared itself later on.
3. Gamecube - last "gamer's console" Nintendo made. A wonderfully designed device hardware wise and featured a lot of brilliant games you could not find anywhere else.
4. Nintendo DS - Still the best handheld console of all time. 3DS still does not have the library to compete.
5. Nintendo 64 - close call between this and PS2. N64 gets the spot purely because it has more games that I still yearn to play now.
I think it is more the other way around. Consoles these days are just PCs with poorer graphics, more expensive games and no upgrade capacity. PC also has superior backwards comparability; though it can be finicky at times (I tried getting Fallout 3 to run on my current quad-core Windows 8 machine and it was a bitch to get running stable, requiring modifying config files and such; but at least I managed which is the main thing).
Also, I think we are currently in a pretty good time for PC gaming. Console exclusives are much fewer than they were in the past so you aren't losing as much by ignoring them, there is a very vibrant indie scene, prices are quite competitive for games and hardware components are dirty cheap compared to equivalent prices in the past.