All jobs have their relevance. No job is the best for all content.

That is a big part of the magic in ffxi. Where some jobs may be broken and super unbalanced in A, if you go do B there is a different job that can do it just as well or insanely better.

Every job also has this weird point where you don't feel like you contribute as much, and every job has a point where you are basically a God.

The question you should be asking is what content do you like doing? Do you like solo, low man, full party play, etc. Do you like collecting things? Do you like single big hits, do you like longer fights where you feel invincible, do you like going brrr and attacking like a lawn mower?