I didn't downvote, but an assertion coupled with waffle words and with no citation doesn't add much to the conversation. Phrasing it as "in my experience, love is contagious" would at least frame the comment more accurately (individual experience and opinion versus universal axiom).
Parents or friends of a person who is dangerous to society will turn a blind eye, be more easily coerced, manipulated, etc.
A loving community will see the signs of recovery in a person, not because there is necessarily any, but because it's what they want to see.