Question: To ride or Not to ride

So, about two months ago or so I stumbled across an ad for a 10, 25, and 50 mile bike ride which will take place this weekend.  I was really excited and tried to get a bunch of people to go with me.   One by one, other engagements have claimed them and now I wonder:  do I do it on my own, or not?  It'll be fun and actie and I'll get a coveted t-shirt....but really, am I just being silly?  And....will I get wet and cold?  And/or bored without someone to chat with the whole way.  So....what do you think??