Yes, the tree falls. Just because an observer is not present does not stop the tree from exsisting. It just deccipitates someone from observing the event and putting themself above the event as an onlooker.
You, and nearly 75% of this world need to learn that as we learned a long long time ago, the universe does not revolve around you. You are not so important as that something doesn't exsist simply because you're not there to witness that. What do you think? You're God or something?
The fact is, when you long pass from this Earth, things are still going to happen, events are still going to take place, and ignorant people are still going to believe it's all manifestations of what they allow to happen. Because they want to be in "control". When you don't have any control. You're part of a bigger picture, and when you learn to accept your role in that picture you'll feel alot better then struggeling to convince yourself that you have so much "control" over reality..