That's great that you've been riding so long! I hope to ride as often as possible for as long as possible too.
I would really love to get a BMW bike, old or new. I have a '73 Honda CB350F right now, but plan on getting a bigger bike this spring for longer distance rides and comfort at higher speeds. 8000rpm is just not pleasant on a tiny bike. I've been watching ebay and craigslist for BMW's but they are hard to come by and they are expensive.
Wow just writing this I'm getting excited for the warmer days! Maybe I should move to Cali...