From the wiki link,
I pulled out of making movies in about '96 or '97. I'm a single parent (Moranis' wife died in 1991 of liver cancer), and I just found that it was too difficult to manage raising my kids and doing the traveling involved in making movies. So I took a little bit of a break. And the little bit of a break turned into a longer break, and then I found that I really didn't miss
That is sad, I understand why but sad.
What is interesting is that when he was doing SCTV he was actually a pretty buff looking guy, but by the time he did the accountant in Ghostbusters he had skinnied down to more of a "Nerd" look.
Acting I guess.
OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.