I have long advocated investing in the Stock Market, because it is best investment that has beaten inflation over the last 100 years or so and the returns from the Stock Market have generally been superior to property or bonds.  I would say though that I find the market very expensive at the moment and have been reducing my exposure to shares over the last 6 months. 

If somebody is just starting on a month to month basis, there is of course no reason to stop and one’s situation depends entirely on how close one is to retirement or not.  Nobody can know how long a bull market can run, but this is now already the longest bull market in history and one has to wonder how long it will run.  The market has been pushed up by tax cuts for companies in America and no doubt once there is a trade deal between America and China the market will go up again, but I just cannot imagine what else, after that, can lead to it increasing much more in the next year or two.  Our local Stock Market has not done well for about 5 years, so one would hope that it would not fall when other markets fall, but unfortunately generally when America goes down the rest of the world goes down regardless of whether they were doing well before then anyway.