They were checking my baby sleeping bag

I know that for many people it might be surprising but I fly to various places all the time. This is connected with my job and I already got used to this fact. I know that I have to get to different places in order to meet my clients. That is why I spend a lot of my time on flights and I am not afraid of planes anymore. Back in the days I felt different about it. I was scared to fly so often as I was nervous that something might go wrong and the plane will crash. I am sure that if you have ever been flying you had a similar fear. Am I right? Another thing that is really frustrating for me is customs inspection. They are always checking everything and they are looking at me as if I was smuggling something. Recently they were even checking my cot mattress. Can you imagine it? I don^t know what they wanted to find there. Drugs? Guns? I sometimes wonder why they are checking my luggage so often. Maybe I am suspicious for them because I fly so often? Obviously they didn^t find anything in my cot mattress and I was able to go to my plane but the fact that they were checking it is depressing. Have you ever experienced something like that as well? What do you think about it?