I am a long time mail enthusiast. My hobbies include cross stitching, long walks, visiting National Parks, painting/drawing, cooking vegetarian meals, and board games. Right now my grandkids and I are really enjoying Rat-a-tat-cat. It is a card game that pretty much every age can play together.
Please, no enveloped postcards. I like the traveled look.
Though I do try to match postcard theme to profiles when I'm sending postcards, I'm not at all fussy about the mail I receive. All mail is special for me. That said, I do NOT appreciate religious cards or religious quotes, including holiday cards. Save those cards for someone who will appreciate them. I do not consider postcards of churchs/cathedrals/mosques/temple or any other religious building a "religious" card. I think of them as architectural achievements.