As long as the venue is casual (no weddings, not to work unless you work in a beach shop, not out to dinner with potential in-laws, not to church, not to a job interview etc.) but otherwise I like them.
But note to men and women alike, please, please PLEASE take care of your feet. Nobody wants to look at overgrown, yellow, thick tonails or toes or heels with flaky red or white patches, or feet and ankles with scabs and flea bites. And men, if you have super-hairy toes, please wax them or trim those hairs. And ladies, if you are going to wear nail polish, keep it looking fresh, don’t let it chip off or let your toenails grow out so that you have a section of nail with no polish next to your cuticle. And everybody trim those nails!