For me is completly unprofitable to join now when most of the coins is already distributed...
Not necessarily. If you know the address of your BTC on Oct 2nd, you can still claim FREE BTX today (and in the future) by entering your private key into the BTX wallet. If you can't do this, you can still buy BTX, register the address, and still get FREE BTX every Monday.
With the FREE airdrops every Monday, and the price going up, you'll have a very good chance of being profitable in the future.