In MLB why do you need to run the bases after a Home Run?

[blix177]

What is the logic behind it?

In the event a dude has a heart attack for hitting a grand slam, what happens?

Or if they run the bases and miss one?

[THE PROFIT]

you have to go back & touch it if you miss, the umps are watching

[mathdotcom]

the only time a guy is going to die running the bases in MLB is if richkas gets called up and is asked to pinch run

[JW Cash]

they have to touch all the bases in order for it to be a legitimate RUN.....

[str]

Must touch them all at the umpires discretion.You guys should watch the Chris Chambliss home run to end the game for the Yankees in the 1976 ALCS.
Man, how times have changed.