As an aside, and also a bit back to the mention of detectives, there's a situation I encountered in the past that I wanna bring up to know what to do in the future. My only sec character is a detective and there's been a couple times that I was essentially the only sec available for a situation. Once I had to make an arrest and even an interrogation because the only other active sec happened to be the victim of the incident in question and as such didn't think it would be proper to interrogate the perpetrator. However there was one time when I was called because a couple people were breaking into head offices and stealing pets. I approached them and asked them what they were doing. They were quite forward about the fact they were 'liberating' the pets although one started flinging insults ICly at my character. The part that got me though was after supposedly convincing them to put Runtime back and fix the damages they did, they just stood there for like ten minutes not doing anything and not saying anything. I eventually got fed up and walked away because ICly, it wasn't my job to deal with the situation in the first place as a detective and OOCly it annoyed me quite a bit, especially since I had to delay a scene I was about to have to answer said call. Then later found out they continued exactly what they were doing and had all the pets wandering the halls. I can't remember if there were any admins on at the time or not but I frankly found the situation quite annoying.
Also to add my two cents on reasons some people might not like playing sec is it's one like medical where if you go off and have a scene you can quite often find yourself being yelled at ICly afterwards for dereliction of duty and a lot of people don't really feel like putting up with that.