I'm not sure age per se is the issue - at 62 I'm still buzzing around everywhere on two wheels and there's plenty of reports scattered around here of 70+ yr olds doing substantial solo trips - have a look at this link for example - (http://www.amazon.co.uk/Old-Man-Bike...simon+gandolfi

It's more a case of how the years have treated you on the way to 70 - and on a practical point how the insurance companies will treat you when you approach them for cover.

Are you riding at the moment? If you're not and it really is 1960 since you last ventured forth on two wheels it might be an idea to get some miles under your belt on something a bit smaller first. Presumably you have a full bike license and it hasn't been snipped without you noticing it during some previous license renewal.

You mentioned a problem with your clutch hand is steering you towards the Honda but there are many other issues (such as weight) that you also need to consider. These things are heavy. My advice, on the basis of the info in your post, would be to look at some of the twist and go scooters - no clutch problems and loads available second hand to mitigate the financial side of things if it turns out it's not for you.

I'm loath to ask about the medical side of things and any advice you've had from the medical profession re " strenuous activity" but it does need to be considered. Medics by nature tend to take a conservative approach to many problems so there may be a bit of leeway in how closely you adhere to their suggestions but I'd only do it if it was something that impacted on my comfort, not on my life.