>>530379067
When you're new, not at all. Especially if you aren't a poor thirdworlder who could just afford it.
Dash ticket is great and can give you a unit that'll carry you all throughout the game. For me, it was SNonomi. Or it's just another body and an option. You literally can't go wrong. Even with a rrat, Izumi or hifoom
But calling Meru or Rumi useless is absolutely retarded