If you don't have a non-ai camera, you need to get one to enjoy the non-ai era of Nikon. I know there are fewer good examples of those old cameras around but an F2 will last forever.
I send an old, unloved 50-300 non-ai to John to have modified. He did a beautiful job and the lens is fun to break out and occasionally use as it is so much bigger than anything out there......yes, I use it for shock value.....not the best glass they made, but certainly acceptable for what I use it for.
Find a good ai or ais lens to use with those "modern" cameras.