Why was the bayonet considered old-fashioned during world war 1?

Answer 1

Because it was a close-combat weapon, dating back to the 16th century. Even long before WW 1, bayonets were rarely actually used in combat and were mostly popular as general multi-purpose knifes in peacetime and between actual battles.

In WW1 the changes in fighting tactics and most of all the use of long-distance guns and machine guns made sure that close-combat fights became even more of a rarity than before and they made the bayonet totally obsolete as a weapon.

Answer 2

With a decent qualtiy gun it is much easier to shoot people than to stab them.

Answer 3

it became old fasioned because it had a knife on the end and if many others were using a modern gun or pistol its not fair !