We BBQ in the winter too, but many days it's just far too cold to get it hot enough to do what it's supposed to do and it's just better to plan a meal that's cooked indoors.
BBQ sauce has never been a big favorite of mine. Main reason? Too darned sweet. Now, I know people like different things and there's nothing 'wrong' with a sweet BBQ sauce - it's just not quite my thing.
So over the years I have tried probably over 100+ different kinds of store brand BBQ sauce and never quite found what makes me happy. So, being worthy enough I finally decided that it was time to start making my own version of what I liked.
Problem was, there are literally thousands and thousands of different kinds on BBQ sauce. And each recipe claims to be 'the best' BBQ sauce there is!
Check this out - it describes all the different kinds of BBQ sauce around the world and man, I wish I could try them all! But it will give you an idea as to why the sauces are different (especially across the US, where it appears each region has it's own variety) and what makes them different.