Depending on age, work, and time.
Alot of trainers are either part time or full time trainers. I would say as the age gets higher there is more responsibility in someones life, making it harder to play. Younger trainers can play more but may lack ability to go far distances.
What are some troubles you find? Would you like to play longer? Is it difficult balancing normal life and this game?
I would say i used to be more full time. Wake up play all hours. Now i can’t and play alot alot alot less. Grown folks can’t play 6+ hours maybe only on a lunch break, i remember i would play whenever i could during breaks at work luckly at the airport there are a few pokestops.
Part time vs Full time
I would say youtubers are for sure full time trainers.