Disagreements Between Hindus
Belief Diversities
Now Hinduism allows you to believe in anything.
There are 6 Darshans, and some Deity based Sampradayas.
But off-standard Sampradayas are also part of Hinduism.
However, respecting everyone's beliefs is not always the right thing to do.
Some beliefs have bad consequences.
Examples
God supremacy
NO! VISHNU IS GREATER.
NO! SHIVA IS GREATER.
NO! MAHAMAYA IS THE CREATOR OF TRINITY.
God Denial
MAHAMAYA IS MAYA, AN ILLUSION.
Strange Worship
EVERY GOD HAS A CONSORT, WHO IS MORE WORTHY OF WORSHIP ACCORDING TO HIM.
Idolatry
Worshipping the statues heavily, hoping god will be pleased by their acts.
Strange Beliefs
WORSHIPPING GODDESSES WILL GIVE YOU MATERIAL WEALTH IF YOU ASK FOR IT. BUT MATERIAL WEALTH WILL FADE. SHE CAN ALSO GUIDE YOU TO SPIRITUALITY IF YOU ASK FOR IT.
Tapas
If one meditates to satisfy god, he will be granted a boon. Somehow several such sages are short tempered and have asked for questionable wishes.
This ideology is clearly misguided, and is a reflection of the mindset of old humans.
Of course, if the saint was a peaceful man who wanted to help people, there would be no issue. But that is not the general idea of a tapasya. It is more like a sacrifice made to fulfil desires.
Although desire is the root of all suffering.