free something is always a scam
Wrong! Consider the most complicated things in life that you have. These include your body and brain and abilities, mostly things you received free. Even your parents had fun getting you going.
Nobody can replace your hand if you lose it completely. All the money in the world can't buy your hand back. It might buy a good artificial hand, but it can't buy one that is the same as the original. You got the original virtually free.
A house or a car, things that people can make, are not free. They cost money, and usually a lot of money.
How strange a universe we live in. The highly complicated things that NOBODY can make are given to you free. But the things that we can build cost money. How utterly strange.
That's just merely a question of how you interpret 'free' nothing is free. Your body needs matter to exist, you have to eat, your parents had to do something. Nothing's free. People never do something just because they're nice. Even if they appear to be doing that, they just do it to get a good feeling. That's what you paid them then.