Actually in the world I'm living in there are few things I could buy with Bitcoin and basically none I could buy with altcoins.

So all I see here is a wall of text with convenient inaccuracies advertising how good your altcoins are.
And if you are so keen for centralization - the thing Bitcoin tries to run away from - you're always free to use your altcoins. But please don't come crying when the central point of failure will break/no longer meet your expectations.