Long term investments are usually held for many years, poten...

Long term investments are usually held for many years, potentially even decades. Hence, a return on investments can only be expected to be realized over a very long stretch of time. Long term investments can include stock portfolios, ETFs, and other investments, like real estate and collectables (such as wine or art).

They remove the prospect of having to so call "time the market". You don't have to decide when to sell. They remove the stress & emotions of investing as you know you don't need the money for a long time so you can, in essence, forget about it.