People like me between the ages of about 40 - 55 are at a great period for riding motorcycles. There are a lot of people selling amazing old bikes that young people either don't or can't buy. We're at a good age for insurance (if we have years of experience). I love biking and I've accumulated 6 old motorcycles with 3 on the road and 3 as project bikes. I don't think this period will last tho ... as those old bikes will start to become too expensive to maintain and mechanics no longer want to service old bikes. And everyone will be switching to powerful electric bikes that will look like full sized motorcycles.

What all this means in terms of your noisy neighbour is that there is a 50/50 chance that he won't be riding for very long.

Sometimes these old guys just enjoy riding and continue riding for a long time.

Or they give up on it because they end up scaring themselves with a near accident or their bike breaks down because they don't know all the ways of taking care of a bike (it's all dependent on the make, model, age, type and little details of the bike) ... they often end up with a mechanical problem and they either don't want to fix it, it's too expensive or they just don't know how and just give up on the bike and biking.