Suicide is another thing Hindus do not believe in, as it also interferes with the soul's evolution. When a Hindu guru or saint feels that they have accomplished all they need to in the present life, they choose to fast to death. Likewise, when a very old person has settled their affairs and no longer has anyone depending on them, they may choose to fast to death. You are certainly correct that selective abortion is being used in some countries including India and China. However, abortion in general is against Hindu principles.
Abortion is considered wrong because the soul is said to enter the body at the time of conception.
Not everyone in India is a devout Hindu, and social pressures and poverty play a big part in the practice of selective abortion and infanticide among even devout Hindus. At the risk of getting into gender issues, most poor women in India have very little voice in their own families and may feel pressured to make such a horrible choice to allow her girl babies to die, or to abort them before birth. Modern Hindu leaders are starting to go back to the Vedas and teach that women are very sacred and special. The Vedas teach that women are sacred and should be treated as queens. He promises to adorn her with jewels and wealth.