Cause/Reasons for 'go-around' and aborted takeoff

[iWantWings]

Just curious: what are some of the causes - and reasons - for which you've had to do 'go-around' and abort takeoff?

Mine (the ones I remember, including primary training) would be something like:

Go-around
- Practice.
- Wind gusts
- Approach too high / too fast
- Insuficient separation from the airplane ahead
- After touchdown: Lateral load with big bounce
- After touchdown: "Got squirrely" on the tailwheel
- Just "didn't feel right"

Aborted Takeoff
- Surprised by effects of Density Altitude (first experience; there was nothing wrong with the plane, but felt very slugish so I aborted in time to settle back down by end of runway)
- Airspeed indicator "did not come alive" during takeoff roll (debree in pitot tube)
- Return to land: RPM dropped just below green range on upwind
- Return to land: Bees in the cockpit (began buzzing on upwind)


That's kind of what I remember. Curious what other pilot's reasons/causes are (whether the same or different)

 

[Jim Logajan]

Only unusual landing abort I've made was my first attempt to land at Santiam Junction (8S3) because I felt the headwind was actually too strong (plenty of turbulence on final, too.) The wind would have made for a nice short landing, but I was more concerned that I'd have a dangerously strong tail wind on take off since landings are advised to the east and takeoffs to the west due to rising terrain to the east.