On visiting grave sites, at least for me, it doesn't happen very often.
Me, too. I visit my parent's grave site once each year, but out of obligation, rather than a desire to do so. I promised my mother I would continue her long-standing practice of placing an American flag by my father's headstone every Memorial Day. I've been doing that for over twenty years, now.
Were it not for that promise, I would probably never go back....