It is still going up but the fear of buying at such a high price holds many back as they are aware of an impending correction but don't know how severe it would be. And should they wait and buy later or miss the opportunity that it will go higher ?
Many are caught in such catch 22 positions not only in SPX500 but also their career, relationship, health, etc. They hesitate , overanalyse things and fail to take actions for fear of the worst things might happen to them. In short, they do not want to take responsibility of the consequences.
But in life, in whatever you do, be it crossing the road, asking for a raise or deciding to buy a stock or index involves an action and comes packaged with a consequence. When you pick up one end of the stick, you got the other , no two way about it.
Learning to recognise risk, handle risk in right dosage is crucial and is one life lessons that we have to experience it ourselves. So, be bold.