Hmmm at the risk of duplicating a ton of already stated stuff:
“Many years ago in Germany when I was just a lad” (quote from a Frank Zappa song) …
I would play in numerous bands being a nascient professional musician. I often attended auditions for the next piano-player, Guitarist, Bassist, Drummer, Flautist, Saxophonist, yadda yadda, that wanted access to our copious gig-flow … read: cornu-copious - A muso needs to pay his rent .. or, at least, pacify the remunitary penance exacted by his current girlfriend 
What I noticed was this:
The dot-guy would always bring a music stand - if we had no dots to stick on it, he would walk. If he brang his own dots, we would all have to addapt to the arrangement penned by the anonomous compiler of those dots (professional arrangAAArrrr) .. we didn’t like that - we could AAAAArrrrr better than any one .. true?
The dot guys were very useful - expendable plug-in-plug-out people that we could replace with a sequencer at any time so long as the drummer could pace with a “clik trak” in the drum-fill - WOO HOO - no need for extra programin!!
In the 2 ton truck, the plug-in guys would ride the tour to the next gig in the back with the gear - if they survived the trip without too many side FX from exhaust fume inhalation, they could stand up and play the gig with us - otherwise we could pull one from the crowd
The savy ones kept low in the pan and ignored our driverly attempts to freak them out
(freeeaquent uneccesary beaking and bizar swerve maneouvers .. at one time me and the guitar guy did a 200 mile trip on a nautical theme … and measured the depth of sea-sick flowing over the back-pan when we got to the motel room!
For learning the songs we had the cassette/CD compilations and a paid-for rehearsal room. If they could cut it they were in.
On stage, if we threw an impromtu solo - it was disaster of one of us had to cover and keep the crowd hot.
SO what you gotta ask yourself is this:
- If you play for yourself - coool play what and how you want.
- If you play to be heard: Coool - play something someone wants to hear.
- If you play dots ..does it serve 1 or 2? If not - there is a 2-ton pantek waiting to make you seasick for a joke .. and a 10$ bet

Dots are for learning and practice - on a stage there is nothing to hide behind - leave the music stand at home.
(edited to say: when I was running 4 bands to fill the calendar, I had a bunch of primitave computer monitors strung around the stage with snippets of music, chord charts and hints about each song so’s each line-up could all do the gig on minimum prep. They were all strung off of a micro computer I had programmed using Basic computer language - with all the song data pre-arranged for 100 songs and a nifty set-selection routine to get them in order .. included all the midi crap to set the keys settings FX and front of house and a gizmo to draw lichen for the drumer. with all that in mind .. sure- use them dots … or whatever it takes - but don’t get caught!)
(edited again to say .. yah yah yah - all you “classical” orchestra dudes - you got such a high workload to do a bungload of stuff you either can do in your sleep or just bland on thru the dots while the conductor performs for you … at least you get to play some real music at the sesh
)
(I am not synical - I bin there, got bored and bin somewhere else. Just watched a Gene Kelly movie - man that guy could dance! Go watch the Groucho bros - all those players and singers hadda do all that in one take! Human excelence is in your own soul - it is nothing new, but man .. if the world was without it??? You are the salt of the earth. Kapische???)