The airline's are full of career changers, im one of them. Took the plunge several years back and have never looked back since. I fly left seat now with a UK airline and I absolutely love my job. Yes of course theres bad days, just like any other job. Still wouldnt go back to my old career however. Just make sure you do your research before committing to anything and more importantly, make sure you have a plan B in place should things not work out as hoped. Also make sure you can pass the necessary medical. As others have suggested, have a couple of lessons first and see how you feel. Your age wont hold you back, you have many years happy flying ahead of you. Life is short.......