Using toe spacers preventably for bunions?

Most girls at my school started using spacers after they had already developed a bunion. I have a fitting coming up and was thinking about asking to be fit with a toe spacer. I'm lucky not to have dealt with bunions yet, but dancing in one to ensure my toes stay aligned might increase my chances of not developing them.

If it happens, it happens but thought it might be a good idea.

Does this make sense, or should I stick to what's working?