Did Friar Laurence ever actually care about others like people thought he did? He walked out of the tomb before Juliet took her life, but the feud ended. Is that all he cared about?

Although this question has some basis for debate, and although the audience's opinion of this character could be swayed by the choices made by the actor himself, the majority of the evidence in the text seems to indicate that Friar Lawrence does truly care for the lovers. Friar Lawrence would like to end the feud between the families, but not at the expense of the people that he cares about.
The lines that raise this question come from the scene where Romeo asks Friar Lawrence to marry him and Juliet. Friar Lawrence is hesitant at first, but agrees eventually, saying "In one respect I’ll thy assistant be, / For this alliance may so happy prove / To turn your households’ rancor to pure love" (2.3.97-99). Friar Lawrence does say that he hopes this marriage will end the feud. However, Romeo's prior love Rosaline was also part of the Capulet family. If Lawrence's only motivation was to end the feud, he could have married this couple instead. However, Romeo assures him that Juliet loves him back whereas Rosaline did not, and Lawrence seems adequately satisfied.
Friar Lawrence could have exposed this marriage at any point and tried to reconcile the feud. However, as the lovers get themselves into worse and worse situations, Friar Lawrence's actions are geared at helping them escape and be happy. He hides Romeo after the duel, he devises a plan to keep him safe, he proposes the sleeping potion to Juliet, and even after Romeo's death he still tries to get Juliet away. When Romeo dies and Lawrence discovers him he tells Juliet "Come, I’ll dispose of thee / Among a sisterhood of holy nuns" (5.3.161-162). This especially seems to point to Friar Lawrence trying to protect Juliet, as he is still trying to get her away undetected. If she was a nun in secret somewhere else, it would hardly help his case in trying to end the feud.
https://www.folgerdigitaltexts.org/html/Rom.html