I don't think there's any question that mono was the way the first several albums were intended to be heard, up until, what, Sgt. Pepper? But I think that was driven by the available reproduction technology of the time. Can anyone seriously think that if the Beatles were recording today, they'd be turning out their material in mono?
And I may be unusual or otherwise odd in this regard, but just because something was originally mixed and issued in a way to sound good coming out of a single 6" speaker behind a perforated piece of metal (i.e., a typical '60s era car dashboard), doesn't mean that I want to hear it that way now. If the original master tapes have a frequency response of 20-20KHz, why on earth would anyone want to be limited to listening to a 250-10KHz version of them? That's what it all comes down to for me - I want the very best, meaning highest-fidelity, version I can get my hands on. If it sounds more "real" to me, then I personally don't care if it is or isn't historically accurate.
And Hep, I can understand your wanting to stick with your LPs. Disregarding all aspects of the LP-vs-CD debate, I do think that you're doing yourself a disservice by not at least giving a listen to the remastered versions. Maybe your local library will get them, or you could find a friend who'd lend one to you just for comparison. I think you might find it an ear-opening experience. And of course, no one is suggesting that you have to get rid of whatever LPs/tapes/CDs you already have, even if you find you like the new versions.