Fishing. The lesbian sister of knitting and scrapbooking.
Which explains why you like it, Chris... 
Says the Mary that drives a Subaru.
Chris, you will love the 3wt. I started using one probably ten years ago and now find I prefer it the majority of the time when it will do the job. I started with a 2 piece St Croix but last year bought a 4 piece TFO BVK* that I can easily hike with. I mostly keep a nice Reddington on it that I got for Christmas a few years back, but also have one of the older Cabelas reels (one of the cheaper ones that goes clickity click) that I keep a sink tip line on for if I have to change to streamers. Though I mostly do dry with the 3wt.
They are a real pleasure to use in little brushy streams (as Kingcreek pointed out) and also make catching little fish fun. When I hike into higher alpine lakes, often they contain small brook and Golden trout, and the 3wt can make them feel like lunkers. :)
I still bring my 5wt when road trip fishing, since the fish can get pretty big in some places, plus I still found my 9' 5wt almost a necessity on the Henry's Fork last year just to get the line out. But for little streams and small lakes and ponds, it's the 3wt all the way.
* Only technically bought. Cabelas was running a good sale, something like $75 off, then I used Cabelas bucks, so... free.
