Single-handed sailing definitely limits your boat size. You have to be able to set and retrieve sails, anchors, etc., and you can't always depend on mechanical assist. Things break at the worst times.
Even couples and small families have to work within those limits somewhat, as during any long passage one person will be on watch, not two or three.
Even couples and small families have to work within those limits somewhat, as during any long passage one person will be on watch, not two or three.