How strong can markets continue to be?

A weekly chart of the S&P 500 shows a clear bearish divergence on the RSI.

RSI is making lower highs, while markets are making higher highs. When this occurs, it can be a signal that the market is losing steam, and that a reversal / dip may be coming.

I have not sold out, but I am holding more cash in the short term. RSI being above 70 makes me less excited to buy more.

I would like to hear other perspectives on the markets; thanks for reading.