Amy Schumer -- Being a Mets Fan Is ABUSIVE ... And I Love It!

Ike & Tina ... Chris Brown & Rihanna ... The Mets & Amy Schumer.

At least, Tina and Rihanna got out of their abusive relationships.

The Comedy Central star was at the airport in Los Angeles yesterday and told us she's a HUGE Mets fan -- even though they're super painful to watch every single year.

"They just beat you down and then you forget about it ... and sign you back up for next season," Amy told us.