But the games I PAID for, that I BOUGHT. How long they will last? Until my first XBOX Hard Drive crash? Because then, probably much of the content in my HD will have been taken out of circulation and I can't get them again.
I can't make backups of my Steam folder so I can reinstall it whenever I want..
I think you have bigger problems to worry about than losing your DLC on an Xbox 360. What about when the console it self dies and they are not making it anymore? You can no longer play any games at all without scoring a ridiculously priced old used unit.
That is the beauty of PC gaming, I found my Commander Keen 4 floppy the other day, threw it in and used DOSBox to play through it. Ive had it for nearly 20 years now.
As for Steam, you can backup games just fine, many run without steam even open (unless they have integration with steam.) Steam even has a backup game thing within the client, Sadly its only for Source based games that use GCF/NCF files.