I have seen first hand the effects of starting the engine in winter and not riding it. Just do am oil change and you can see it for yourself after the winter months and just going out and letting the bike idle for a few min. Yes you are right about the engine warming up, but if the fluids just sit there and dont circulate along with the warming process, the end product when you change the oil will be a big slug of white messy crap inside every compartment the fluids get in. Search "oil and water do mix" in the forums. There are some great pics of what its like, the pics are from a guy that rode 10 or so miles to work and back daily, not allowing proper warming to happen...... But like it was said.... To everyman his own. It's ur bike in the end, do whatever makes you happy....