But I want to have free bitcoins!
ASICs aren't designed to profit the consumer. They exist to profit the manufacturer only.
Why not just buy the Bitcoins you need?
But I want to have free bitcoins

Look into Faucets. Those are the only true 'free' bitcoins.
As for buying ASICs, dude, wait at least 6 months til things stabalize or you're tossing money in the trash.