Flying used to be a luxury experience. Never for anyone under 50 years old, but it apparently used to be very relaxing and fun. Now, the first thing you experience when you get to the airport is the unnerving feeling someone might have slipped a kilo of illegal substances into your bag while you nervously walk around in your socks… Doesn't sound as luxurious anymore. Plus, if you want any sort of comfort on the flight, you need to dish out the cash. So if you want extra legroom or just the assu…