It is true that, many scientists are searching living for new planate. Some year after, all people may be live in other planets, consequently a plethora of human believe it is require to pass money on research about space I am strongly agree with this statement.
Out of all asserts first and foremost reason is that, scientists are researching and the believe to after few years later earth may be damaged by humans. In addition to, humans can not live on earth because of they are doing unnecessary activity. For example people are rising to the pollution and these direct effect to the global warming so few days later earth is not living to safe place for humans. Secondly where in earth all various types of resources are in limited amount, therefore to finding to better planets so it can be easily available resources and that makes smooth life for human. In fact, definitely spend money on research because sometimes by luck will be find to better planets to the earth.
Turn of the another angle, when researcher are doing their research than many resources and money required for this work although researches are many times fail and all thing to be wast. Moreover when researches are fail than the bad effect to the countries economy and also environment. For instance, U. S. A country to many try for finding for other space and planets, but they have do not successfully in their research. At the and they loose money and energy.
Heaming on the last nail, scientist say many years later, earth will be damaged by people, so it can be not easy to live in earth, therefore people are definitely spending to their money in research for other planet.