If you buy a house, it is illegal to set it on fire. It is also illegal to pump infinite molten lead into the soil under your house. It is also illegal to spray aerosolized asbestos out of the chimney of your house 24/7.
I miss electronics shops :( The chain and small hobby shops around me don’t carry things like resistors and capacitors. I checked every single one. Really.
Then I bought a lifetime supply of resistors, like actual hundreds, and it was delivered to my doorstep in under 6 hours for $8.
Simple to do badly, but still challenging to do elegantly. Managing power/throttle response in every situation is quite complex if you want it to feel good. Kinda like how everyone makes a trackpad, but only Apple makes Apple trackpads.
And thats before we get into the complications of thermal management with the batteries and heat pumps and stuff.
Only if you actually use that much. You almost certainly don’t.