I never cared for Mew, when i was a kid i didn't knew the glitch, but otherwise i was a lonely player, nobody to trade, so i could never complete the pokédex with my original blue version. When i played a rom on my emulator, i tried it out and found out that the glitch worked and it was true, and a friend of mine told me there were other glitches and ways to obtain Mew, but never tried them.