I think philosophy is not a thing by itself, but a tool one can use.
It's the base of every logical decision made, the base of any idea. It's the logic, the reasoning. But what's the use? For me, this is it:
Being able to think like a philosopher. Being able to consider possibilities that go against our own beliefs. To be able to do so, one must step back and look at the situation. One must be able to use their critical thinking skills.
To be able to look at our opinion with a different perspective than our own is a difficult task, but a very powerful one. Whenever we look at someone’s position, we try to find the assumptions they have made. We practically challenge their beliefs. So if we use this tool to analyze, we would challenge our own beliefs and value more the opinions we have.
To be able to see both sides of an argument it's like if I say two heads are better than one. As we all know, philosophy also brings knowledge, and since everyone has a different 'amount' of knowledge, then two heads full of knowledge, is better than one.
As Tricia Ellis-Christensen said here, compromises helps to resolve problems. We can see the perfect example on this website, about the peace of Westphalia. A single comprise ended a 30 year war.
To conclude my position, I would like to add that the train of thoughts that philosophy can create can helps us find a meaning, a reason to go on, a purpose. So whoever said that philosophy had no use, has not thought about it quite enough.
