Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Why invest for the long-term rather than buy and sell for quick, big gains?
As an easy way to answer... look at an index, let's say the S&P 500.  Look at the price this last October, and predict where it will move in November... easy right?  It already happened, and you have the benefit of hindsight.  The move looks like such a consistent, obvious continuation of the previous up and down pattern.  It looks predictable, like you could have guessed that.  Now, look at today's price, and predict where it will go next month.  Not so easy now?  The problem is, every point you're at, all the time, looks like a possible inflection point or turning point.  If you're following an uptrend, you may think it'll continue, but you may also think that it zigged so far up already, that now it's ready for a zag down where you'll buy.  So you wait... and it keeps rising, and you kick yourself for missing out.  Next time, you see another uptrend and resolve to buy it regardless, thinking now it'll keep going, but it turns down the second you buy it, and keeps dropping.  You kick yourself again.  The market is amazing at doing this to you every time.  In real time, every wiggle in the price looks simultaneously like a trend that could continue, and like a trend that has moved far enough and is ready to reverse.  And more likely you'll guess the wrong one.   The ONLY way with some little hope of succeeding is to study study study, and find and learn trading rules with just over 50/50 chances (like buying when a moving average is touched within an uptrend as an example, and setting a stop loss at -1%, and a sell limit at +2% or something), and then never ever deviate from that strategy, because your only hope is in the consistency of statistics and odds over time.  You'll get many -1% losses, and hopefully enough 2% gains to compensate the losses, plus some profit.   OR, to make it easier, just buy in on a dip, and hold and hold and collect dividends, and be content to match the market without effort.