Should we buy a house with termite damage on the roof and garage?

We are at the final stage of buyoing the house we really loved. However during termite inspection, the inspector found termite damage on the roof and the garage. We are wondering if it's worth persueing the house if the seller agrees to fix it. Also how sever the damage can be if the termites are found on the roof.

View this post on my blog: http://madeinhome.info/should-we-buy-a-house-with-termite-damage-on-the-roof-and-garage