Most auto shops recycle their oil, and those that do DIY oil changes should recycle or dispose of their oil properly through household hazardous waste (HHW) facilities, auto shops or other collection sites.
There are several oil-changing stations that will just recycle the oil for you. If you are doing it yourself, you can look at this website for recyle locations- http://www.recycleoil.org/.
Laziness
Take it to a quick oil change place and they can recycle it with their used oil.
not many people recycle
yes
yes, some people burn used oil as heat source.
Cheaper?
Theres no reason not to so I suggest you start now..
1/500 gallons of oil
It is a method to recycle used tyres and produce fuel oil.
make more cars