With crime you basically can decide between:

Don't care - get more casinos so that 1 day of casino SIM production would balance out a casino robbery every other day - be aware that in this scenario all your citizens (gamers, scientists, artists, gamblers...) could get converted to criminals over time

Balance it out - keep crime rate low enough so that your casinos actually produce a positive SIM flow if you calculate "SIM produced between robberies - robbery" - but you still are in danger of having one of your special citizens being converted into a criminal

Zero crime police state - get enough police cards, gyms & cinemas to have 0% crime rate and never get robbed again and never worry about a rare good citizen being converted into a criminal - also achievable by not buying banks, shopping malls or casinos

I personally went with the last one but it took quite a lot of SIM to get there. The good thing is that security cards also produce SIM so instead of more raw SIM from the card you just get more SIM by not getting robbed and never losing a rare card (scientists, artists, pro gamer) because it got converted into a criminal.