Earlier quoted context omitted.
I don't know where you live, but where I live, we do.
I've traveled all over Europe and North America and have taken a lot of trains. Not once did I have to remove my shoe, scan my baggage, or had any kind of liquid restrictions.
In Europe the major exceptions are Eurostar (Channel Tunnel) and the Spanish high-speed network, where the major stations are like airports, with airport-style security, airport-style departure lounges, and waiting. As I understand it, the extra security is at least partly an outcome of the Madrid terrorist bombings of 2004. Terribly self-defeating.
In France by contrast you can still arrive 2 minutes before the TGV departs.