People prefer to PUG rather than join an FC?

[Hawklaser]

It's not easy to find a good FC

You join one and notice it has hundreds of ppl in it, but if you search the members list you'll notice that 90% are inactive characters that have been offline for more than 15 days.

If you ask FC members to do Primals, CM or AK runs they either don't reply or say they're too busy.

A great FC needs to have active members, it needs to have extra baggage like inactive members to be dismissed from the company, and everyone needs to be able to lend a helping hand whenever they can. It's true that sometimes ppl are busy, but sometimes people are just unwilling to do something from which they will have no reward. Charity is not supposed to leave you with anything.

Some people know how hard it is to find a good FC, so they rather just pug everything and get some progress done, rather than to wait forever for their FC to do anything at all.

Pretty much this.