League of Legends is a FREE game

You get the full experience for Free, albeit you may have to actually play a bit to get that content, you can indeed can every single thing in the game for free. (Even a bunch of skins now).

Yes 6300 ip champions are expensive, but you don't have to buy 6300 ip champions all the time, there are plenty of low cost champions, you could buy every single 450 ip champion for less then its costs to buy ONE 6300 ip champion.

Or you could spend a little bit of money on the game, at most $15, and unlock 20+ champions, and I think 2 free skins (Starter bundles are insanely cheap). And we don't have to use ip on runes anymore, given the new system coming out. It has literally never been easier to get content in League, Riot released a system that gives you FREE champions, or skins, which is their main source of income. Riot has discounts and bundles ALL the time.

No you don't need every champion in the game, and unlocking everything in League isn't really easy, its not meant to be, because its a free game. So stop bitching that champions cost to much, there PLENTY of options to get them, for very little effort. (You even get to play 10 champions a week for free)