Modifying Cars, Why do we do it?

This is due to our obsession with having to change everything and keep it all fresh.
To you, modifying has turned into an obsession. But then modifying them makes them more personal and comfortable to the owner.
Modifications can be done to anyone's taste so as long as you love your own creation is doesn't matter what anyone else thinks, and this is why we love it.
My question to you is, why do you modify cars? Is it for the purpose of racing or the passion of making a car fully personal to you?
Please share your experiences and views of the whole "car modification".