OP - with no discouragement intended at all, let me tell you about my experience:
I was a WS from age about 15 - 18 with my coach, locally. What that meant was that weekends, after school, and in the summertime for longer stretches where I would stay at the barn (say a week or so at a time), I would do… whatever needed doing, and in return I would learn. Sometimes extra lessons on my horse, sometimes the opportunity to ride some fancy horses, sometimes hopping in the car to look at sales horses - hell, sometimes I would tag along to off-property students’ lessons and be the fetch-and-carry girl (set up fences, pick poop out of the arena etc).
I learned a ton. I credit those years with giving me a much deeper and broader understanding of riding, training, and horse care than folks who have “only” taken lessons. I recommend doing this to absolutely anyone who is able to and wants to really learn. I was/am a somewhat talented rider. I look decent on a horse and I can stick through shenanigans. I learn quickly and usually have a pretty good attitude. If I had decided to, I likely could have made a go at moving up locally - maybe even done decently on the provincial level. National? who knows.
Instead, I went to university. Leased my mare out. Moved home afterwards and rode her through semi-retirement. Caught rides on some… interesting creatures when she fully retired.
Now I have a professional job that allows me to pay for board and lessons at a nice barn close to my house. I am still a nice rider, I have aspirations to break into showing now that I can feasibly foot my own bill. Due in part to all the hours I put in as a younger rider, I still have a lot of stickability and can decently ride most horses thrown my way - because of that, I get the pleasure of working with many of my coach’s other students’ horses. I ride through odd issues with them if the trainer needs to see it from the ground and the student isn’t maybe quite brave enough. I take on extra rides when other owners are on vacation, or sick, or injured. I get to do fun stuff with my coach’s big fancy horse. My WS years continue to serve me well.
My coach is a very talented rider and horsewoman. Been riding since her single-digit years. Has ridden with some top names in the sport and is a truly wonderful rider and teacher. She makes her living entirely through coaching - which is a rare thing. And yet - I could tell you her name and I guarantee you wont have heard of her. We are good friends, and often talk about our jobs and lives and commitment to horses etc. We make around the same amount of money yearly but I have benefits, sick time, etc. She of course, is her own boss, gets to do her passion as her job, etc. There are pros and cons and we’re both happy people She likes having a student who has perhaps more capability and experience than many adult amateurs, and that’s enabled me to have a lot of great experiences working with her.
So - by all means, WS positions can amazing, they have the potential to serve your riding career well for a lifetime, and in many ways. Important, too, is the ability to have some perspective on the realities of life and how most of us enjoy the sport through our lifetimes.