If you become a serious poker player, learning the poker odds to Texas Hold'em is much easier than trying to learn the odds for Omaha or 7 card stud.
I'm not sure if they have a odds calculator for those last two games.
Learning the odds in Hold'em may make you more secure when you go all-in against someone with a lessor hand, I guess.
I think most of us who think about looking at the cards on the table, will know who has the better hand.
Knowing the odds is another way to impress other players as well, if you're into that.