The farther man reaches the more we all benefit from it not only in terms of items like calculators, better and faster computers, but travel in general, and medical advances.
Yes it costs a lot but it has positive returns, and opens up the creation of new industries, creating jobs that require better education and a cycle of good things come from it.
It does have a human cost, as about five percent of the people that have been launched have died doing so (because astronauts often launch more than once). As of now about 500 individuals have flown on space flights from Russia/Soviet Union, the USA, and others. Twenty-two have died while in a spacecraft in the Russian program and in the Shuttle program, and that ain't bad for such a dangerous thing to be doing.
So please do some research before you condemn what you clearly have no knowledge of.