You will get plenty of chances to do that, DaveA, and you will be drawn into plenty of other threads too. All kinds of topics are discussed on GN, some very hotly, as you will see if you read the news and politics threads.
When I had just joined Gransnet, I mentioned it at a group I met with weekly (in person, not online) They were a mixture of men and women, most of them over 50, intelligent, and quick to put the world to rights each week on whatever subject was currently in the neespapers. I said how interesting Gransnet was, how there were always several discussions going on about various things, news and politics, religion, TV, films, cooking, advice on family quarrels, the perils of ageing, getting on with neighbours, travel, holidays, home maintenance - and of course grandchildren. No-one responded for a moment, then one (unmarried) man there piped up with "Oh, I don't want to listen to people going on about their grandchildren" and that was that.
If that is all that he heard out of the list of topics, and no-one challenged him, no wonder some people think that old people are boring!!! There's none so deaf as those who close their ears.