The question you both should answer is, "If you like your current car, then why not purchase it?". Many people end up buying the car they lease if they had a great ownership experience. My wife's 1st BMW purchase was her mother's 2006 330xi coming off of lease and it's an amazing car! She eventually traded the car in for a 2011 X5M and even turned her Audi owning husband towards the brand.
Good luck, and enjoy your next ownership/lease experience!
2012 550xi MSport - everything but TV's in the head rests!