Are UFOs the reason for earthquakes?

No. Oklahoma is now has the most earthquakes because of fracking. Earthquakes happen when the ground shakes. The ground can shake because of movement of the many plates that form the outer crust of the earth. Or they can happen when the process of fracking causes the rock layers to move. UFOs are based on reports of people seeing unknown objects or light in the sky. These objects would have to hit the earth at high speed to cause earthquakes. Sometimes these UFOs are meteors but often they are simply hoaxes.

Drugs are bad.

Not likely, since 90 percent of UFOs are Man Made right here on Earth.
And the other 10 percent are WEATHER.
But then again the planet Venus has been reported as a UFO.

nope

Nope. It's mostly due to tectonic plates where the land masses keep changing over the eons, as well as faults and the ring of fire that causes instabilities on the crust such as the San Andreas fault.

Most of the UFOs seen around earthquake sites may be the result of energy discharges that can result from the earthquake.

By the way, those who think that it's impossible for Earth to be visited by extraterrestrials really needs to quit doing drugs.

I got caught up in 3 earthquakes but I seen no UFOs. so possibly not.

not at all

No, as earthquakes are caused by Earth's plates pushing together

this coul be the case if they has a starhip bigger then earth ;D
and because of the gravitiy of the ufo spaceshift :D