You know, grandma, Linux distro's are restaurants, where you can eat, but they also share their recipes in cookbooks(if you want):
everybody has a bit different choice of the recipes they like, not all of them can be used with all kind of stoves ("Debian" can use most kinds of "stoves": i586, arm, ...) and
but all in all, the food served and the contents of those books is quite similar - as there are only so many recipes in the world.
In some of those restaurants you have to cook the food (or better said make it warm) yourself - e.g. at Gentoo's :-)
But he community there is lovely, and their help you.
The cooks that put together those recipes may not be the best in the world (not all of them are chefs in a restaurant with 5 Michelin stars),
but unlike those chefs, they believe in sharing the recipes.(and this really seems to be the best way, as in such a way the cheap, quite good quality food can get to the masses - see e.g. the current rise of the fastfood chain called Android.) And many of these cooks, give you even the meal for free, or cheaply.
The joy/price ratio is high, though maybe not for everybody.
(there are e.g. "snobs" who still prefer those "Michelin" restaurants. In last years, the one offering apple-only diet, is quite popular, providing visually very nicely served, but quite expensive meals
or there is still that, almost monopoly(with huged Windows), where they serve those very little pieces of food ("micro"), softly boiled :-)