Should I buy a PS Vita which is $249 to play Harvest Moon?

Growing up I used to play Harvest Moon: Back to Nature on the PS1 and recently just got this game working on my iPhone 5c using an emulator, but the buttons on screen make it kind of hard to play.

Do you think it's a waist of $249 buying a Vita just to play this game/other games too?

If that's the only game you want to play then it would be cheaper to just get a used PS1 and the game itself probably, or maybe a PSP.

I would say unless you are interested in playing Vita games then getting the Vita would be a waste of money.