Best glue/adhesive/epoxy?

ok i have tryed all of the following and they are ALL crap. don't try to argue with me because i have tryed them all exactly how they say to use them; roughen surface, let sit for however, mix, ect and still they all are terrible: JB weld two part epoxy, JB weld metal to metal putty, gorilla glue(sucked the most), two part gorilla glue, rhino glue, locklyte metal and concrete(which i was surprise didn't work, krazy glue, and ive tried sauntering too. all of them broke off over time and im not using them for anything extreme at all. Anyone know of a glue they used that they were literally not able to pull or break apart? preferably metal to metal and dont suggest welding