"I'll start investing once I have more money" and "I'll start once things settle down" sound like reasonable positions to hold. Both are decisions, even though neither feels like one. Waiting has a cost, and the cost is time, which is the one input compounding needs most and the one you cannot buy back later.
Why delay doesn't feel like a decision
Nobody sits down and decides not to invest for the next three years. The decision happens by default: this month there's a reason, a big expense, an uncertain job, a wedding, next month there's another one, and the string of individually reasonable months adds up to years without ever getting flagged as a choice. Each month on its own looks like patience. Strung together, they're a decision with a price, made without ever weighing the alternative.
Where the cost shows up
How compounding works already covers the mechanics: growth builds on growth, and the earliest contributions have the most years left to compound. What that means for a delay is specific. Money invested at twenty-five has forty years to grow before a typical retirement age. The identical amount invested at thirty-five has thirty. That's not a ten percent difference from a ten-year wait, it's often a difference of tens of thousands of dollars by the end, because the years lost were the ones doing the most compounding, not the least. The compound interest calculator turns "what does a five-year delay cost" from a guess into a number for your own contribution amount. The cost of waiting isn't the money you didn't save during the wait. It's the growth those specific years would have produced, and those years don't come back once they've passed.
What starting requires
Starting doesn't require a large amount or a fully settled financial picture, since the basics of investing apply the same way to a small amount as a large one, and a partial start compounds too. A modest amount invested this month starts the clock on money that has decades to grow, while waiting for the "right" amount or the "right" moment keeps the clock stopped at zero for another year, another reason, another month that will look, in hindsight, no different from this one.
The decision hiding inside the delay
Waiting is a decision. Once you see it as one, the honest comparison isn't "invest now versus invest later." It's "invest now versus lose the years later can't replace." Framed that way, most of the reasons for waiting stop sounding like patience.