I am at the point in my life where I don’t really start a new period because the rules look cool. Most of the time, I get rules and I usually have a collection anyway. On top of that, many rules do not have the army lists or scenarios with the main book. If so inclined to but one of those, I’d have to be pretty keen on them as that usually translates to a lot of money.
All that said, a pre-game game and a regular game are mostly the same to me. I often have to game on my own (solo) anyway.
"Nearly all men can stand adversity, but if you want to test a man's character, give him power."