>>514057334 (OP)
You want philosophical implications or real world consequences?
The world turns without you, whether you like it or not.
Your reputation and character is determined more by other people than yourself, regardless of what you want.
You can go around thinking that you don't need to worry about anyone else. Like you would think, it doesn't matter or effect you.
Right up until someone wants to use you without your own knowledge.
Which is more possible with solipsism and lack of empathy.
Ever wonder why rich people turn to drugs, become total paranoid freaks, have some sort of derangement borne from human isolation?