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A sometimes very thought provoking

, other times quite distubing

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discussion currently still going on here, if anyone's interested in getting in before it gets locked;
I guess regarding the break-up, I personally would attribute it to a couple of things:
1) John and Paul’s personal relationships with the women they loved.
2) The disagreement they had on who would take on the band management responsibilities.
3) The development of George Harrison as a songwriter who really merited more vinyl space on their records and wanted some props or at least to be seen as an equally viable partner in the Lennon McCartney collaboration.
4) There was no consensus on the objectives and goals of the future of the band. There wasn’t a definitive vision cast that they all were in tune with.
That’s how I see it, I could be wrong, but I believe any personal issues or band dynamics challenges could have been ultimately solved but those four things needed to be dealt with first.
In regards to the guilt McCartney apparently felt due to the break-up... I believe stems from the fact that his solo album was released before “Let It Be” ( if I am not mistaken) and so he kind of doubled crossed the others. Coupled with the idea that The Beatles were originally John’s band so to speak or developed out of John’s initiatives and so John should really be the one to dissolve it. This is just my take on why Paul might be feeling a little “guilty” about things all these years later.
One last thing: Many of the posters on that thread said something to the effect of the break-up didn’t matter, was ultimately irrelevant or indicated that the solo work was all there anyway so we didn’t miss out on anything. I disagree with this perspective because each Beatle made the others so much better! Together, they could create masterpieces which rocked the world. While individually being pretty good, together they were a colossal juggernaut. So we did miss out. We missed out on their solo material being augmented and enhanced by the other Beatles. Can you imagine Paul, George and Ringo on John’s stuff or John, George and Ringo on Paul’s stuff, or John and Paul ( and of course, Ringo) on George’s stuff? Not to mention John, Paul and George on Ringo’s tunes! Point being each Beatle influenced each
other Beatle musically and artistically beyond what they individually could come up with on their own. The chemistry of that band was amazing, spectacular and matchless. Simply put,
They were Fab.