if you have a paid off house or condo that you bought 30+ years ago, your carrying expenses should be well under a grand a month, maybe under $500.
other costs of living in San Diego are only marginally higher than in other parts of the country. (and in some cases lower, since HVAC is less of an issue)
plenty of both older and younger people in the area where i bought in mission valley, seems like a pretty normal mixture.
