I don't really know the differences between each Buddhist school, but i shared most of the buddhist's beliefs regarding reincarnation, continuity of the mind and events (which i still believe today), disregard for life and a general belief in the hopelessness of it all, disregard for lifes pleasures, appetite for spiritual knowledge and spiritual life. I used to read a lot about it, listen to monks teachings, and visit once in a while a buddhist doctor with strong mediumistic abilities. ( he would not be nice to me, and i don't like him lol)
But i believe buddhists are missing the point, life is not about Nirvana, renouncement and cessation of the mind, it's about spiritual progress, empowerment, and getting what you want whatever that can be, not renouncing what you want!
The thing is they want to pretend they know it all, and you can see that in every religion. Just admit it, you don't. There is an extreme arrogance when people start to adopt this state of mind, and i think it gets worse when they obtain spiritual powers, because from this point, they are even more reinforced in the belief that they get everything right, while they can be literally stupid and wrong about so many things. I understand why in many scriptures they say siddhis are not be looked upon : simply because once some people reach them, they get a lot of arrogance because of it, and they lose the humility that is always necessary in life. But siddhis are not bad in themselves, it's just that most people are too stupid to approach them without keeping their head right.