1700+ close on the S&P 500 for the first time ever.
This is what a bull market does. New highs after new highs, etc.
Participate, slowly build positions, methodically managing position size, always being ready for the eventual dips and pullbacks as opportunities to add.
Do you have a plan to go to the sidelines if the trend changes? You need to avoid participating in that trend reversal when it comes, but we are not there yet. There will be opportunity to exit when appropriate, but for now, if you are not owning stocks, you are wrong.