You should probably switch from omeprazole to famotidine. I used to be on omeprazole until my doc noted that there are indications of it be a carcinogen when used long term. Switching was a non-issue for me.
Of course, I’m just some rando on the internet. You may want to seek some reliable info on the topic. Look for PPI vs H2 receptor antagonist.
Old people who are assholes were probably always assholes. They were once young assholes and got older. Conversely, old people who are good, were probably good people when they were younger, they just got old.
Most people don’t stray far from their roots. Few are those who make a meaningful change. Some choose goodness as a goal, some get their asses kicked by life and turn bitter.
I guess the lesson is don’t be an asshole. if you are one, work toward being less of one until you aren’t one anymore. Try not to let life get you down. If all else fails, drugs.