So with so many ADC not buying Crit early, why do we still have it?

Here's a list of every ADC that doesn't rush a Crit Item, and prefers a Yommuu's Ghostblade instead in Popular builds:

Was rather overpowered with the Black Cleaver and Yommuus Rush build until he was nerfed.

Sometime rushes Yommuus and Duskblade since he already gets guaranteed Crits as well as having them only do 150% bonus damage. Also has massive bonus AD ratios on Q and E.

Typically Goes Top Lane, but even there it's usually a Yommuus Rush

No escapes, and with the Move Speed from Yommuus, can play safer. Black Cleaver stacks easily with her Ult, as well as getting 40% CDR from Black Cleaver, Yommuus, and Duskblade.

Yommuus move speed and attack speed helps with stealth and poison stacking.

I've seen either a Tear Rush or Yommuus Rush, no Crit items.

Tyler 1 build seems pretty damn good on Draven. Just saying.

Gosu's build seems pretty good as well. More AD, doesn't need Crit to shred tanks, Move Speed and Attack Speed are much better on her with her ultimate.

So why do we still have Crit?

It's RNG, it's not as good early, some tweaks to Auto Attack Reliant ADC could make it so that they don't need it, and we could get rid of 1% Crit runes as well.

Also, I forgot to mention the other ADC that don't buy Yommuus, but not a Crit item.

Tear and Sheen Items, followed by Botrk

Tri Force rush, which does not give Crit anymore