The probability of the bubble bursting now though is higher than in 2017 (can't argue with that?) ... Rebalancing is a form of market timing, why not be 100% in

The probability of the bubble bursting now though is higher than in 2017 (can't argue with that?) ... Rebalancing is a form of market timing, why not be 100% in equities and never rebalance? There is some evidence to suggest that's a good idea. The way I approach this is that I take these sorts of macro bets with some portion of my portfolio. In a sense I adjust or rebalance my portfolio to partly reflect what I believe are better investments at that time, but not radically so. That way I get to have the fun of maybe timing the market and making an extra buck while also mostly being continuously invested. Being diversified also helps.