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I see what you mean, and Karl Popper seemed to be concerned with more practical matters of philosophy as well. Many times he chose not to argue about topics that held no clear solutions. However, much of what attracts people to philosophy involves ideas of God and the nature of reality itself. These topics may not seem practical to argue, but they affect our practical life anyhow.
For example, a recent political topic in the US is whether or not gay couples should be allowed to marry. Gays and lesbians are faced with legislation that stems from moral, religious, and philosophical views of the societies in which they live. Even though there may not be any clear solutions - what we determine to be the “nature of reality” or “morals” today, will eventually filter its way into society and change the views of people twenty - or a hundred - years from now. Thereby molding practical life.
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