Airline Regulations

I think that the limitations of liquid on the flight are not necessary.

When we ride the flights, we can’t bring much liquid items. The limitations are different from each airport or country. However, we can buy liquid like wine, water, and so on, at the shops in the airport after the safety checking. Also, we can bring any amount of liquid if we have it in the luggage which are loaded in the cargos. It is a big conflict. I don’t know why those limitations are needed but it is unconfutable for me. So, I want to improve those limitations.