driver lisence, credit card, bills, $25, and lost valid

What reasons make people inattentive in their regular life? For example, when you leave home, normally you should take your valid, if you drive keys and driver id, or your cell phone. I found two different valids at the store this week. Imagine you lost your valid or things in your valid, how would you feel? Both valids have id and money in it, but there is not any phone number on who owns the valid. I thought the guy was rush when i found the first valid. Yesyerday morning the guy came and asked if he left his valid night before . I gave the valid and added that he should be careful next time because he had his green card in the valid. The second one is still in the store. The lady didnt come yet. She has many credit card, id, and some dollars. I didnt called the cops yet but if she doent come in a week , i will give the valid to cops. Then she will have to do many paper work to get it back. I felt sorry for both of the costumers. Carrying something as valid keys is like breathing,i mean you dont think about doing it, but you do it authomoticly. Something bothered me in that situation. When i found the valids, the first thing i thout about oh if there are some money in it. I dont care how much in it, and i definitely dont need that kind of money. But why i was curios about how much they had... So my advice is if you dont want to lose anything make your list, lets say three thing you have with you all the time, valid money and keys, count them all the time where you go or leave then you ll be safe :))