If you have a son or daughter, they may get married in the future and that will then make you a MIL...?
Don't get me wrong, some of the MIL threads I do sympathise but I'm getting really sad to see every other thread being a MIL bashing. In particular it's when poor MIL is mother to a son. I just think we all need to step back a bit and think we may be one one day!