I bought one recently. There's a fast cycle. The manual indicates the option uses more energy and water; it completes in ~30 minutes. All the other dishwashers we looked at had a similar feature.
My family of four is usually just fine with the ~3 hour cycle. It corresponds quite well with our three meals a day; the lunch containers are most certainly clean by "tomorrow morning".
> Your dishwasher demands $600 to $1,200 upfront, plus $200 to $400 when specialized parts inevitably fail. Annual operating costs hit $60 to $130 for efficient models, reaching $218 for older units depending on local energy rates. Compare that to handwashing: immediate results, zero equipment investment, and complete control over timing. The math increasingly favors the sink.
If you value your time (and a lifetime of skin/joint wear-and-tear) at $0/hour, sure. And the sink has its own upfront ($500-$1000; https://www.homedepot.com/b/Kitchen-Kitchen-Sinks-Drop-in-Ki...) and operating (sponges, hot water, more water per washed dish) costs.