To give a sense how far halacha discourages divorce, the Halacha as paskened by the Mechaber in Shulchan Aruch regarding a case where a wife comes to beis din demanding a divorce on the grounds that her husband is physically violent with her, if the dayanim receive witness testimony corroborating her claim or he admits to her charge, the Halacha states that beis din must place the husband on official beis din ordered notice that it he continues being violent against her the beis din will then order he divorce his wife. But the beis din cannot order that until after he was given official warning and continued his behavior despite being warned. In the event he denies having been violent (and says she’s making up the claim in order to obtain an unjustified divorce) and there are no witnesses corroborating her claim, the beis din cannot accept it simply on her word. The Shulchan Aruch rules that beis din is then authorized to place an agent of beis din physically in their marital home to witness whether he’s being violent and can only order a divorce if he so witnesses.
And violence is one of the grounds the gemorah lists, and Shulchan Aruch paskens, is a valid cause to force a husband to give a divorce even if he doesn’t want to give it. There aren’t too many reasons halacha deems are grounds for divorce, and the S”A rules that only for one of the very specific reasons specifically listed in the gemorah as grounds for divorce, if corroborated, can be used for a beis din to rule a divorce is mandatory.