Buying Guns is a huge waste

That's because those games are Pay2Play. And having micro transactions in a Pay2Play game is a complete rip off if you ask me. And no-one should buy the stuff since you already bought the game. And with that stuff I also mean downloadable content.

This game is a Free2Play game. But they still need money like the rest. In stead of having to pay first and have a complete game, you pay for parts of the game you want (Items, consumables, cosmetics, etc). And in stead of a P2P game, you don't need to invest anything into it if you don't want to. But I do think that everything (except cosmetics) should be unlockable by putting enough effort in it, which is the case.

You are right, but cosmetics are still not worth the money in my opinion. 7€ for 1 texture, which you can only use on gun OR vehicle OR suit. 21€ if you want to cover everything with it. Thats waaay too expensive. During steam sales you can get AAA titles for 7€ ...

The only buyable "item" which is 100% worth the money in PS2 is the membership. ~9€ a month for permanent 50% xp and ressource boost, 48 passive CERT a day and some other stuff is a very good price.

Its like membership price was set by Valve and other item prices were set by EA.

Well, then I think we can agree in the general lines.
The only difference between you and me on this point is that I'm a sucker for shinies, and you aren't