Garage: Destroyed. Next steps?

[Keegan Singh]

Hey everyone, I have a garage that has been halfway demolished by falling tree limbs.  As you can see from the photos, water damage is starting to take place...It's a really old garage.

The home was originally purchased in 2007 for $41,000 and is located in Springfield, IL. 62703

I have a few options that I could pursue:

1. Sell the house as-is
2. Fix the garage, then sell the house
3. Demolish the garage, then sell the house

I guess what I am asking is: is it worth it to fix this old garage?  I know there are a lot of factors that go into that question so I need help.  My first instinct is to get a roofing contractor and real estate agent to have a look and get their opinion for this home/neighborhood.  

I know this is a big messy question but any input would be really helpful, in case you're wondering I have no experience in real estate.  Thank you!