1. Its the cheapest console avalible
2. It has great games already avalible (gears 1 + 2 , halo series , fable 2 , forza 3 , all games develped by rare)
3. It has great games coming out this year (SC:conviction, mass effect 2 , alan wake , halo reach , fable 3 , natal games , possibly gears 3)
4. Its got exellent online features (partys , free demos , zune marketplace , avatars , achievements , facebook+twitter+msn)
5.Its got great downloadable games from live arcade(trials , geo wars 1+2, castle crashers, shadow complex , splosion man , the maw, alien hominid hd)
6.1 year head start (means it gets more developer support and an extra year of sales)
7. Its the most popular console in the UK ( which is good because i live there and all my friends have 360s)
8.It gets more timed exclusive games and DLC (like the mw2 map packs and most JRPGs)
9. Its got lots of cool features on xbox live like last.fm , indie games and sky tv in the uk (netflix in the US)
10.Its got natal which will bring lots of cool features to the 360 that its competitors dont have
And to all people saying the 360 isnt a success : the 360s sold over 10 mil more than the original xbox , its also sold more than double the original xbox sold in japan , and microsoft also makes profit with every 360 made unlike the original xbox which lost microsoft $4 billion
End of 2012 prediction:
xbox 360 : 73-75 million 
playstation 3 : 72-74 million wii : 104-105 million 
Most hyped for :
Bioshock: infinte, The Last Of Us, Alan Wake's American Nightmare and Agent
