It's really funny how some people view trees with regard to golf course architecture. The course that I play quite a bit, Hulman Links in Terre Haute, Indiana, is, in my opinion, a tremendous golf course with some really wonderful golf holes that are marred by the city's inability to properly maintain the course.
I understand that, prior to a major tree removal program 6-8 years ago, the golf course was borderline unplayable...but I've only played it since 2010 as it's my golf team's home course.
The 5th hole is a marvelous mid-length par-4 of 425 yeards from the reg. tees that bends gradually right and has a really great green complex with a huge variety of potential hole locations. The primary hazard here, unfortunately, is that there is a large tree with a huge canopy that sits on the right side of the fairway, at approximately the beginning of the dogleg. This canopy comes into play for almost everyone who plays the hole at some time or another. For the better player on the back tees, or the mid-handicapper from the regs, a well hit tee shot to the center of the fairway can often lead to an approach shot that must be cut/sliced around the trees canopy to any hole location that is right of the green's center.
Most of the people who play there have grown so accustomed to this intrusion on the line of play that they just accept it as a legitimate hazard on the hole. Playing in a money game last year, and after expressing dismay that I needed to hit a 30 yard cut after a 280 yard tee shot to the middle of the fairway, I was told by a playing companion, "....this is a great hole, and you just need to learn how to play it".