It isn't a bad thing, its a tool. You are taking money from the future and bringing it into the present and in so doing adding to your burn rate. But the fact that rates are really low is pretty spot on. If you can get 3 - 5% rates on 10 or 15 year notes that is a good thing.

They do however sit at the very front of the line in a sale, (even before your investors) and that can make some investors a bit nervous.