Lord Shiva is known as the deity who can be pleased with minimal offerings. Even if you offer water to the Shivalinga everyday, that is sufficient to please Lord Shiva. Outwardly ferocious, Lord Shiva is very innocent inside. That is why he is also known as Bholenath, which is a Hindi word translating to "innocent Natha". Natha here refers to Shiva.
However, it is also believed that there are some sins which Lord Shiva never forgives. Hinduism mentions some major sins, which can be committed either by thoughts, speech or action. Hence, it is not just the actions which if wrong might be disliked by Shiva, but the thoughts as well. Here are the sins which if committed can bring the wrath of Lord Shiva.
Desiring Someone Else's Wealth
Never try to misuse another person's money. Never forget to repay the money you owe someone. One should never eye another person's money. This results in Shiva being displeased.
Desiring Someone Else's Wife
Trying to disturb the married life of another person is considered as a grave sin by Lord Shiva. Neither should one desire to possess the wife of another nor should he try to create problems in their relationship in any other way.
Plotting Devious Plans Against Others
Even aiming for the evil of others is disliked by Lord Shiva. Those who plot evil plans against others or try to destroy the happiness of others are never appreciated by Lord Shiva. He likes people who are as innocent as he is.
Desiring To Walk On The Evil Path
Some people have a particular inclination towards evil activities or creating nuisance in the society. Lord Shiva does not like these antisocial elements.
It is believed in Hinduism that insulting a woman makes Goddess Lakshmi unhappy because of which she might leave the house. This is disliked by Lord Shiva as well. Chanakya has said that no God stays in the house where women are not respected.
Some people, out of ignorance, hurl dirty and unhealthy comments on women, which not just humiliates them, but also displeases Lord Shiva, who gets annoyed as easily as he can be pleased.
Lord Shiva likes those who are as innocent as he himself is. If somebody tries to spoil another person's dignity and respect in the society, this might enrage Lord Shiva. He considers it a sin if you try to defame a person. Using lies against others and spreading rumours is wrong in his eyes. Talking behind the back of a person is also included in this.
Consuming Certain Things
Actions such as killing animals for consumption is another sin in the eyes of Lord Shiva as per Hinduism. Killing animals for consumption is believed to displease him. Violent actions like this are not liked by Shiva.
Though Lord Shiva is often portrayed as taking Bhaang, it is believed that he does not like it when his devotees become addicted to alcoholism, drugs, etc. It ruins one's body and hence, ruins the lives of those belonging to him.
Stealing property from a Brahmin, or from a temple also displeases Lord Shiva.
Disrespecting One's Elders
Abusing one's parents, teachers or criticising them brings the wrath of Lord Shiva. One must also not abuse hermits as well.
Some Other Sins In The Eyes Of Shiva
Some other sins in the eyes of Lord Shiva are having an illicit relationship with a daughter-in-law or sister-in-law, burning a cowshed, a forest, etc.