Investing in ASX-listed exchange-traded funds (ETFs) in 2026 could be one of the best things to do for our long-term wealth.Owning ETFs makes it easy to gain the returns of the share market without having to do a significant amount of analysis.Investors could easily choose the simplest ETFs, like Vanguard Australian Shares Index ETF (ASX: VAS) and iShares S&P 500 ETF (ASX: IVV). Keeping it simple is a powerful strategy when it comes to investing.But, I’m also attracted to ETF ideas that focus on just owning ...