Opinions on Chubb?

I've had the idea recently of investing in insurance companies as a defensive way to park money I otherwise don't know where to invest. Top property and casualty insurers like Chubb seem to make a ton of money, have consistent growth, and the valuation at a glance based on P/E isn't insane and actually seems suspiciously low, I believe it's because of the nature that insurance is with how it's a high volume low margin business but with companies like them outside of Travelers and CNA, there really isn't much competition. Maybe The Hartford but their share price is more volatile historically it seems. But I never hear anyone talk about it outside of investing Berkshire. What am I missing?