It might help to look at different motivations people have for wanting to be moral.
There seem to be two basic camps:
Some feel they should be moral in order to meet some given standard or ideal. To these, morality becomes a black-and-white list of rules that spell out which behaviors are acceptable and which deserve shame or judgment.
Others are motivated to be the best versions of themselves . . . to grow as people and learn to bring as much value as they can by how they live their lives.
One group sees morality as an exact, imposed prescription; the other sees it as a vision or goal that gets clearer and clearer as they approach.
Does one of these motivations give morals a better point for existing?