Actually, completely true and you're 100% wrong. The title of this thread is "stuff that might be worth more in the future", so what you're doing with vinyl right now is irrelevant. People were throwing away vintage baseball cards until the market for them caught fire in the 1980's.
Right now, vinyl is hotter than hell, vintage included. They're actually impressing new music onto vinyl again...
My fiancee is a girl scout leader and the most in-demand Christmas present amongst her scouts were ipods and record players... and oddly enough, as far as fidelity goes, the "vintage sound" is what they're after. Not digital clarity.
Further, the ones that are worth the most money *aren't* "Beatles and Elvis records", that were pressed by the millions (save for early, scare or rare variants- like, the Beatles Butcher Cover, etc...) The ones that bring the most money are the esoteric stuff. Jazz, blues, some early country. Stuff that a non-collector would look at in a bin of records at a garage sale and blow over.
The key to vinyl is research. They are definitely not all equal and you might have to look through 500 before finding one worth a decent amount of money. There are enough "Muppets Christmas" or "Frampton Comes Alive" to go around for the next 100 lifetimes... but there are a lot of people fighting over certain scarce titles that can be plucked from flea markets and garage sales for quarters and dimes and as we sit here today, that collector market is growing pretty fast.