At this point, though I’ve reduced my use of Wayfarer, I play the games less than I use Wayfarer; and I was already a fairly casual player because it was something I was conned into joining and then it became a passive activity to replace the “proper” gaming I no longer had time for when my little one came along 
I mostly submit for the benefit of the other players in the rural communities in which I live and visit and to represent the things that are important to the community or to pass on the history/culture/stories that are often overlooked or lost (our region has a poor track record of preserving and communicating much of this until more recently).
I do also enjoy challenging perceptions with submissions that encourage users to be more present and think differently about the things in their everyday environment that they may never have fully appreciated. Being more mindful is always a good thing IMO and I’ve had positive feedback about these kinds of submissions, so it’s nice to know that I’ve been able to accomplish this for those who are curious enough to read the descriptions of such nominations and consider the real world POI through a different lens.
I’ve had a fairly significant impact on the gameboard in my region, seemingly taking up from the previously prolific submitter/s who seem to have burnt out and lost interest. It seems I’ve helped increase uptake and retention of players and use of more parks and trails on foot, which is pretty cool (although I don’t think the PoGo convoys will ever be eliminated, especially when it’s 40°C+ and extreme UV outside) 
If the system were easier to work with, I’d probably do a lot more, but those who don’t understand it or aren’t interested in participating are happy to have a lot more opportunities to play than they would have had otherwise, so I’m happy enough with that