My next trip is not until next summer, but we were in WDW last year at the time of both the Pulse shooting and the gator killing the little boy. We were standing in front of Bay Lake Tower, our resort, blissfully watching Wishes as search helicopters flew overhead and we had no idea why. We worried about sadness interfering with our trip and then felt guilt over worrying about ourselves when people were truly suffering around us. However, as strange as it may sound, I think it would have been harder to deal with had we not been there. Being at WDW brings out the best in us and helps us to see the best in others. The reactions of the CMs and the other guests we encountered helped us to feel connected to people rather than to linger in feelings of isolation and hopelessness. I don't feel like I'm explaining myself very well, but my point is to say I get how you're feeling and at the same time encourage you to push through it and throw yourself into your trip. A few days at WDW can be great therapy.