Everything is over inflated at the moment so it's a dammed if you do dammed if you don't kind of situation. However, a global ETF is going to return the highest

Everything is over inflated at the moment so it's a dammed if you do dammed if you don't kind of situation. However, a global ETF is going to return the highest yield for minimised risk, and even if the world markets crash. You're still holding something of value.