When I first started to buy and collect handguns back in the 1970's, I bought only blued guns. That was as much out of ignorance as it was out of preference. As a result, I have several old Colt and Ruger revolvers that are blued. They are handsome looking pieces, indeed. But, I want to keep them looking handsome, so I don't shoot them very often.
For the past 20 years or so, though, I've bought only stainless guns. Unless a gun is not offered in stainless, and I want it very badly, I will not buy anything but stainless these days. In that case, I'll usually go ahead and buy the gun, and then send it off for hardchroming.
My preference for stainless is confined to the brushed or matte stainless finishes. I dislike polished stainless or bright nickel. I recently bought a stainless CZ75B, and it was polished to a mirror bright finish. I couldn't live with it, so I sent it off for hardchroming.
The only gun that I think has to be blued is a Python. Personally, I wouldn't want a Python any other way. A deeply blued Python is the summit of handgun elegance.