Every generation is fascinated with the party they just missed. I am 40, so the Beatles fit that slot for me. The younger people today are more enamored with the 80's and early 90's.
The Beatles are not, in my experience, overrated. That's hard for some folks to swallow. But no one says John or George were phenomenal guitarists. Paul is revered among bassists for some great playing circa Sgt. Pepper, an Ringo gets a nod from drummers for his unique fills, but neither are overrated. In fact Ringo is typically underrated.
They are called great for their songwriting, singing, and although soon veiled in the studio - charisma. Even the songwritng doesn't seem overrated on the whole, it taking its place among other great songwriters of the era.
Sadly, I do think even the great Beatles are already becoming largely forgotten. They will always have their place in musicology, and let's hope, more than a sentence. But how many great composers get little more than that themselves? I think my generation (the also forgotten X) is the last to have the Beatles in the forefront of their consciousness. So, in 50 years or so, the Beatles will be buried in history, and in good company.
It's ok. It's a reason to savor the time even more. And, a reason to keep one's musical openness broad, and reaching far into the past. No art ever dies, it's always in the now.