What is the ruling of Islamic law regarding seeking a divorce from a husband who frequently curses and insults, curses religion and the world, and insists on insulting the wife's family, knowing that this is the questioner's second marriage and she is religiously committed?

The abuse from the husband mentioned focuses on two aspects: insulting religion (which is disbelief and apostasy), and abusing the wife and her family (which is bad character).

Insulting religion is an act of disbelief, and it is not permissible for a Muslim woman to allow him to have conjugal relations with her. The marriage bond remains valid if he repents before the 'iddah (waiting period) ends.

As for insulting the wife and her family, this is bad character and permits the wife to seek a divorce.

There is no blame on the wife for seeking a divorce in these cases; rather, it may be obligatory or permissible.