I wanted to become a flight attendant because i basically LOVE being in the air. The more i am in the sky the happier i am. I feel one of the luckiest people on the earth when i am on the aircraft!! To think that I CAN FLY is an amazing thing in itself. Through my love of flight i also want to become a pilot and im working on doing so right now. That made my desire to become cabin crew even greater.
If you show that you love flying and look enthusiastic in the prospective job then you will be fine. Its hard at times but the benefits by far outweigh the downfalls!
Good luck
Dave