mushrooms a plenty

Does anyone else think mushrooms are so weird / awesome?  This last week my yard has absolutely exploded with this alien creatures.  I left them alone for a few days because I wanted to watch their growing patterns. Apparently the cold rainy climate of the last week is exactly what they like. They've tripled in size since I saw them pop up about 5 days ago.  

The feeling I get from people when I ask about mushrooms in your yard is that it's a negative thing.  Sorry but I think they add something fun to my yard.

 When I first bought my house, there were two enormous cottonwood trees that were dead up the center.  We had to remove them because I was scared a wind storm would send them tumbling down on my little house.  We had the stumps ground and we were left with a whole "buttload" of mulch. We used this mulch to raise some of our flower beds and I also spread it around as an "organic substance" that I figured would help with soil conditioning.  After doing some research, it sounds like decomposing wood can cause mushrooms to sprout which is why my yard is a little mushroom forest right now.   As soon as it heats up, sadly they will disapear.  If you don't appreciate their presence,  you can always just pull them out, but they still will grow back unless you use some sort of chemical mushroom killer. I would never.