I think it comes down to perceived vs actual risk.
It's not easy to judge the real risk of you, riding your motorcycle, getting into an accident. Fly-Sig put it right by saying "Statistics do not apply to the individual specifically". However, we can get some
insight through statistics. And those can be surprising
- for example, while a person is statistically 30x more likely to be involved in a motorcycling accident than a car accident, they're also over 23x more likely when on a bicycle. Even walking
gets you in an accident 8x more often than driving a car. At least on a motorcycle you have protective gear.
I've read somewhere, that horseback riding and skiing are both more risky (per time of activity) than motorcycling, but can't find references now.
There are loads of dangerous activities we just don't consider such. Would anyone forbid a dad to go skiing or ride a bicycle?
We, as humans, are pretty bad at judging risks or probabilities. We're actually judging the cognitive ease, or availability, of imagery correlated with the subject. Are bikes dangerous? I can easily bring up memories of seeing horrible bike accidents, so yes, they must happen often! But horrible accidents are easy to recollect due to being so striking. Just like after 9/11 we've collectively thought terrorism is a real risk because the imagery was fresh and graphic, while more people die in car accidents literally every month. It's estimated that more people died in the following months by electing to travel by cars rather than airplanes due to the perceived hijacking risk, than in the terrorist attack itself. Kahneman's Thinking, Fast and Slow
is a great book that shows just how crap we are at perceiving probabilities. Don't let motorcycling become a boogeyman in your wife's eyes. At the same time, do acknowledge the real risks and have a plan to manage them.
And there's a second facet to this issue - what will your family lose by forcing you out of your hobby? Maybe a grumpy dad, with his outlet taken away, harboring that bit of resentment over what he had to sacrifice? There are different folks, a baby always changes a relationship, but statistics show it's as often for worse as is for the better. It's crucial for all involved (including the child!) that boundaries remain respected and that both you and your wife still have a life outside of parenthood. Your mental health is paramount, this has been brought up by psychologists for years.
One last thing - if you go for a compromise and still ride, but ride less, remember that by riding less frequently your skills deteriorate. Probably the worst thing you could to, risk-wise, would be to make a deal that you'll only do "that one motorcycle trip a year with the boys". You have to stay sharp. If you're riding less frequently, make sure to offset it by taking advanced riding classes or something.