This is a very interesting topic, I have spent some good time pondering our reality and the solipsistic approach. It has caused me some existential anxiety pondering it but I feel that I am coming to terms with it in a much better light these days.

I think that is a great attitude to this conundrum and to life in general too. Having dealt with some anxiety issues in my mid twenties I came to know the "If so, so what" mantra rather well and it helped me in getting past some obstacles and gave me a greater view on life in general.

As far as solipsism is concerned, in my consensus reality I am currently experiencing, duality is a big part of that. All is separate! But joined together also, like I can perceive a tiny thread linking it all together (thanks to my meager psychedelic use). The great conundrum! The human experience for most people is as a separate identity for the majority of our waking lives, the only time we might journey into unity is through psychedelics, meditation, mystical and religious experience and sometimes through dream states.

Neither is invalid when looked through the lens of experience and perception. Whatever you perceive or experience in the hear and now, be it complete union with the oneness/godhead or separation/duality as a human in the rat race of consensus reality, is equally real and valid in that instant of time that is the now. It's trying to make the two opposing ideas sit well together in the human mind that is hard and that can cause fear and anxiety, but that is the eternal paradox that has been created and neither is necessarily right or wrong, it just is, and it is also beautiful