Yes I am almost 52 now so rather surreal to be in university, but also wonderful. In fact far more wonderful and I already mourn the coming loss of being in a formalized learning environment, it will be a shock to the system for sure. Losing access to all of those journals! I have become so used to having instant access to vast storehouses of research. My course work component ends in April and I am off to do my last practicum placement in a secure treatment unit in a forensic mental health hospital where it is likely/hopefully that I will secure employment.
That was quite a switch for you, car mechanic to biology, congratulations on realizing that you were not where you belonged. That must be a fascinating field, I did do biology right up until grade 13 in high school and I have always been keenly interested in what Sheldon from the Big Bang Theory would call all that squishy stuff. Like you I also knew that the various things I had been doing (retail management, IT consulting) weren't for me and that I was meant to do something else. I decided I did not want to grow old with that kind of regret and took the plunge. I am already very glad that I did so and at least I will not look back and wonder if I could have succeeded at higher learning. I was even able to take a PhD. level course during my two year Masters and I now know that if I was to go that route, I could accomplish that as well. We'll see, I expect to take courses as I age just to learn and there is a requirement in my field for annual training so the learning will still be there.
Ok, back to bikes. It is raining here and within three weeks hopefully all the snow is melted and salt washed away so that I can get back out there on my little Cube (actually it is pretty large). Here is a picture from last summer of my bike, I call her Ridey.