Because you think its' fun would be a good reason.
I think a freestyle bmx should be made out of steel but I've heard bmx's are made out of chromoly or alluminion, i hope that's just for racing
If they think they want to - sure.
It's smarter to get a BMX bike instead of a ps3.
You should try Winstanleys bmx, they have some cheap clearance bikes.
it matters what you are going to use it for
No it's pointless unless you have a race bmx which doesn't have a front brake anyway
Well, if you ever intend to ride it on the streets, it should have brakes.
depends the age and size
Save up money for it
The main differences between a BMX 20 and a BMX 24 are the wheel sizes, with the BMX 20 having 20-inch wheels and the BMX 24 having 24-inch wheels. The BMX 20 is typically more maneuverable and better for tricks and jumps, while the BMX 24 offers more stability and speed. Your choice should depend on your riding style and preferences - if you prefer doing tricks and jumps, the BMX 20 would be more suitable, but if you prefer stability and speed, the BMX 24 would be a better option.
Tighten the stem
I race bmx but often ride park and trails. I'd go with a Fit or Eastern