Well, don't use it for tournaments or whatnot. Use it for Battle Frontier/whatever-it's-called-nowadays. Use it to demolish the Elite Four. Use it to demolish a friend in a local wireless battle. That's what I do.
There's a certain satisfaction from destroying a friend's team with a shiny, IV 31 all thing that knows moves that it normally shouldn't.
If I had access to another Emerald version, then I could get a Groudon with Sacred Fire.
But if you're entering in tournaments or playing with people who argue about legal moves, then have the Ditto transfer one Egg Move at a time. Results: easy Egg Move transfer, no illegal/glitched moveset, and no worries about IV transfer issues (if you use a good Ditto).
I am a glitcher, not a cheater. I do not alter game codes, but use what's given to get what I want.
As an RNGer, I can RNG any breedable and encounter Pokemon to any nature, ability, IV spread, shininess, etc. For those in dire need of a certain Pokemon, I might accept trade requests for any breedable Pokemon to full specifics (DW Abilities limited, ask for availability) in return for 1 Rare Candy.