Ok, I'll play. I sold my 2012 Jetta GLI Autobahn Edition back in October so I could buy a used Tacoma TRD Sport 4x4. And before the MK6 GLI, I'd owned two different MK4 GLIs, a MK4 Jetta Wolfsburg Edition and a MK1 Audi TT. Needless to say, I've been a VW/Audi enthusiast for over twelve years now and I fully intend on purchasing another one sometime down the road. However, to reiterate what a few others have already posted, I don't regret the decision to sell my VW and buy a Tacoma one bit. Yeah, the combined gas mileage on the Tacoma is right about 10 MPG worse than I got in my GLI and yeah, there are times when I desperately miss the low end torque of a 4 cylinder turbocharged motor but even still, the versatility and overall usefulness of the Tacoma outweighs all of that. Without a doubt, my Tacoma is everything I need it to be and I absolutely love it.
Now, while I don't know your reasoning for wanting a truck, the main reason I decided to buy one was because my wife and I recently moved into a new house and we have a ton of stuff we want to renovate/update. And let me tell you, it's a hell of a lot easier to haul wood, dirt, mulch and anything else you can get from a home improvement store in the Tacoma than it ever was in the GLI. On top of that I'm a fairly large guy and I have a much easier time getting in and out of the truck than I did in any of my old VWs. That and I don't know if you have kids or not but lifting my two year old daughter into her car seat in the back of my doublecab is much easier than it was bending over and having to reach down to buckle her into the back of the GLI. I may only be 30 years old, but doing that day in and day out was starting to take its toll on my back... Lastly, coming from a lowered car with stiff springs and a somewhat harsh suspension I can't believe how much more I enjoy being higher off the road and not hearing my teeth rattle when I drive over crappy, beat up roads. I'll admit the Tacoma doesn't have the nicest ride in the world, but for being a truck I've been rather impressed. That and I can't put it into words how nice it is not having to swerve to avoid large pot holes or go slowly over railroad tracks anymore. Driving a truck with a good amount of ground clearance has changed my life and I love it.
Anyway, if you think you'll get more use out of owning a truck then I say ditch the VW. If you're just looking for something different and more reliable, a Tacoma still isn't a bad choice. Either way, if you end up buying one I'm willing to bet you'll be happy you did.