I've never had anything stolen form mea t the gym.... mainly for the same reason as you. I've got a hack squat machine - 2 flat bench's - 2 incline and 2 decline bench's - curl/tricep machine - 1 pec dec - 1 incline fly machine - 1 leg press machine - 1 leg curl/extension mahcine - 1 calf machine - the legpress also has a bar for the calf's. 1 lat pull down machine - another lat machine (like bent rows) and an ab machine. Plus eveyr dumbell up to 120lbs and tons of plates of all sizes.
Our gym is also guarded by our 86lb boxer and our 6lb yorkie

and if they make it passed the boxer and then the yorkie - well then - they can deal with me and my father.......