I'm Plant Poor

Oh my goodness, what does it mean when my money plant dies?! I got this little guy at Ikea for almost free and it lived for a couple of years in my office. I kept it moist but not soggy and it just started slowly dropping leaves for the last few months until they were all gone.

The only thing I can think is that it didn't have enough sun. Any other ideas? Maybe it's because it lived at a non-profit...