I have many answers, from long, to informative, to "sayings" to quick.
Most of the time I say "I'd rather be a witness than evidence" or "because it's my constitutional right" or "because my superpowers are broken and I can't psychic predict who the bad guy's are or when bad things will happen" or "same reason I have insurance on health and my possessions - in case tragedy happens"
BUT most of the time, it's a simple "just in case". that normally gets them wondering "in case of what"? I say, that's different for everyone". my bit of philosophical thinking.
Most of the time I say "I'd rather be a witness than evidence" or "because it's my constitutional right" or "because my superpowers are broken and I can't psychic predict who the bad guy's are or when bad things will happen" or "same reason I have insurance on health and my possessions - in case tragedy happens"
BUT most of the time, it's a simple "just in case". that normally gets them wondering "in case of what"? I say, that's different for everyone". my bit of philosophical thinking.