New member TODAY. Fun site. If I could pick your large humming brains. Maybe someone has written about this subject. When does one replace a computer? Have a mid 2010 mac mini. Does everything I need. Have backup/time machine. I guess I should wait. New M1 looks nice. Not a good time to buy ($). I saw a video, some clever fellas replacing old HD with 2TB SSD & 16 GB. Don't need a performance upgrade, but it might extend the life (presuming HD is the weak link). Also could upgrade from El Capitan. Thanks. OK to curse in response.