I will say this. Don't judge the masses from the actions of a few. I been hunting all my life. Started dog games in hunt test, and am now addicted to trials. Met some of the best people and my best friends in both venues. I would say 99% of the people from hunting, hunt test and field trials are as good as gold. The 1%, I just stay away from. The sportsmanship issue seems to be something brought up about field trialers quite frequently. I have run across very few instances of poor sportsmanship in any of these venues. I would guess it is about the same throughout from what I've seen. It may be more obvious in trials because of placements at the end.
The things that stick out more to me are the good folks and good sportsmanship. I barely remember my first started pass, but I remember feeling insignificant compared to others getting finished ribbons and titles. I can tell you I will never forget my first all-age win. I got calls, text and cards from competitors running against me, including pros, and others I have met along the way. One card is still sitting on my desk at my office. With all that said, people in this sport are awesome. The dogs are phenomenal. Enjoy the ride and be thankful for what you have. If you ever get a chance to surprise someone for an accomplishment that is a big deal to them, DO SO!!! It will mean a lot more to them than you can imagine.