On a more serious note, I’ve had that sort of feeling several times. Got tired of the price and monotony of american paper, so went to foreign. got tired of the price and monotony of american coin so went foreign. Got tired of modern all together and went ANCIENT! Which is where I stand today
It’s a natural progression. I focused on Lincoln’s years ago. These days I can’t see the date on. Lincoln without reading glasses and a loupe. My Lincoln Whitman book was started about 1970 and I didn’t get around to plugging the last couple of holes till 2010. So go learn about another series. Lincoln’s will be there when you circle back around.
I would be sure to pick a new type to collect that fits your budget. You fight think about building type sets. That may lead you to something you enjoy and want to collect.