But many worry about how it will work in practice.
ECONOMIST: The Atlantic alliance is waning in Europe��s east
There have been 27 murders since New Year's Day, and many people worry about their safety.
Groundwater is far-and-away the largest source of freshwater in a world where many regions worry about critical shortages.
"Many retailers worry about buying the right thing, then they worry about buying enough of it, " he says.
Many environmentalists worry about one of the assets of plastic -- its durability.
But with prices rising fast, many now worry about feeding their families.
Many professionals worry about the time commitment involved, which (if you look at celebrities who are active on social media, like Lady Gaga or Richard Branson) can be significant.
Not only is it labor-intensive to check references for people who might not be poised for a job offer, but Jack Harsh, adjunct professor at the University of Richmond Robins School of Business, said that many employers worry about the risk of liability in rejecting a candidate based on poor references.
But whether Mr da Silva wins or not, many Brazilian bankers privately worry about the prospect of default, as do many outside observers.
No wonder officials in many emerging economies worry about being stranded on the farm.
"When you're having trouble or struggling, you have so many things to worry about, " said Hirshberg, 39.
Persistently sluggish job growth and stagnant real wages have also caused many centrists to worry about the consequences of globalisation.
Though local economists are optimistic, many foreign analysts worry about exports, which last year were the main engine of growth.
But - and here's a familiar argument for Americans - many Western nations worry about national security and rapid cultural change.
While many Asian countries worry about aging populations, Cambodia seems stuck in another era, where average life expectancy barely exceeds 50 years.
As the New York Times piece points out, many galleries also worry about security or think that putting prices on art cheapens it by making it appear like a commodity or any other widget.
Like many people, we worry about the physical, biological, human health, environmental, social and economic impacts of fracking.
Like many writers, I worry about the decline of reading in an era of digital devices that whittle away our attention span.
Too many people worry too much about what the scientists, theologians and journalists say to even consider that they're responsible for their own lives.
Despite a burgeoning gay scene in India's big cities, many Indian homosexuals worry more about exposure to their families and colleagues than about the law.
ECONOMIST: Where Victorian values and repressive laws still hold
In the past, too many parents had to worry about how they would pay the mortgage or the car payment if their sick children were dropped from insurance coverage.
They do not have to worry about how many people the vendor needs to complete a project.
Many in the West also worry about Russia's greens themselves.
As is evidenced by the recent rebound in bearish sentiment, many individual investors continue to worry about the pace of the economic recovery and the uncertainty coming out of Washington.
FORBES: Despite Investor Unease Bullish Sentiment Remains High
In emerging markets it is hard for companies to stick to one specialism, because they have to worry about so many wider problems, from lousy infrastructure to unreliable supply chains.
Although there are risks, many of the things that adults worry about are far less likely than some imagine.
Ms. TIFFANY MUNIER (Parent): You don't worry about the experience or how many years of teaching.
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