I really don’t care whether or not an album is ground-breaking, influential or highly acclaimed by the popes of music-rating.
My ratings purely reflect an indefinable factor consisting of delight, refreshment, satisfaction … hence replayability on MY! turntable.
I'd classify most of the music I rate as "above average" (even some of the 2.5s!) compared to the loads of bullshit out there in the musical universe (which are totally underrepresented below)

5.0 - ESSENTIAL - feeling highly uncomfortable without them
4.5/4.0 - HIGHLY ESTEEMED/ESTEEMED - I prefer having them around... always!
---------------
3.5/3.0 - O.K. (for the genre) - keeping the highlights normally is sufficient
---------------
2.5/2.0 - FLAWED (traces of interest at best) - underwhelming as a whole, no need to keep them around
1.5/1.0 - BAD - feeling uncomfortable in case they are around

However: I (as little as anybody else) don't know the secret code of ranking the quality of music! That’s for sure!

taste & rate: What’s it all about?
Taste: a quality possessed by persons without originality or moral courage. (George Bernard Shaw)

Is it any good? No!
Good taste is the excuse I've always given for leading such a bad life. (Oscar Wilde)

Anyway, the most important:
Über Geschmack läßt sich nicht disputieren. (Manni Kant)

That’s why fortunately (or regretfully):
Taste cannot be controlled by law. (Thomas Jefferson)

And don’t forget:
Good taste is better than bad taste, but bad taste is better than no taste. (Arnold Bennett)