I use it almost everyday...as I have to go through some sloppy areas for work, mud, snow, etc.

The average day on pavement is all 2wd, just like my wife's mini cooper.

I only shift into 4wd when its slippery...if you live where its slippery more, you use it more, etc.

By slippery, I don't mean its raining...I mean its muddy, icy, snowy, etc.

In summer, on pavement, I'm pretty much always in 2wd...you don't need 4wd on pavement, or all the 2wd cars wouldn't make it, would they?

In short, if you are looking to justify keeping the 2wd, or geting the 4wd...you are asking the wrong question...as how often others use it means nothing, they don't live where you live, work where you work, fish where you fish, etc.

You need to determine if the 2wd has been limiting you...if not, you are fine with 2wd.

If yes, then getting 4wd to overcome those limitations is reasonable.