1. It has no intrinsic value.

2. It is hated by those who like controlling others (socialists/post modernists). This might not seem like a flaw, bit since these people control government, it means that its users would be relentlessly prosecuted.

3. It's hard to get into. Because of no. 2 it's hardbto convert local currency to monero

Its community.

Everything else about it is not bad.

Well maybe that endless supply cap but yeah...