You're far more likely to kill yourself due to inexperience, than due to engine failure or any other technical malfunction. You might also consider getting a glider license to fly motor gliders, as they give you more time and options to land if you're worried about that.

From http://www.schiratti.com/humour.html:

  Control: You're unreadable, say again.
  Motor-glider: I've turned off the engine, is that better?
  Control: (looong pause)

:)