Well that is the point of the character.
He's like a good parable to a common human failing, which is that he is brilliant in the realm of technical and mechanical ability, being able to devise spectacular science (fiction) devices and tools.
But for all that advancement he's still stuck in the same primitive and common issues that we all share. Loneliness, ostracisation, wounded idealism leading to nihilism, self-aggrandising yet still insecure and so on.
As with the various societies that can be called modern; the technology advances much quicker than the personal development of the species who created it. Concepts like wisdom are hard to define, understand or even justify, being as they are almost impossible to measure and live in a nebulous and ephemeral relationship with context.
And of course we can always be cynical because this is a good protection against self-revelation and also because there are innumerable contexts into which an individual may never be placed, so how could they possibly know of another's pain? And besides, it's well documented what horrible creatures human beings can be and how conditional our ethics are. When all the evidence points towards the worst aspects of our nature, is there any reason to bother?
This seems to be at the centre of a character like Rick. Although I think the infinite dimensions aspect is meant to induce a reflection on the concept of that infinity, that you are instantly replaceable with an almost identical copy, I think it deliberately misses out that with infinity you do not get just the infinity of the worst, you can also have the infinity of the best and all the flavours Inbetween, with the myriad individual variations.
The psychologist at the end of the pickle Rick episode gave a good summing up of the situation, that he vacillates between seeing himself as both the arbitrator of a God-like will that can bring anything into being and being this helpless vessel that has no free will due to the imposition of his knowledge and the causal web he is part of. There is also the rather damning point that she makes, which is that the hard work of keeping things running and working on your flaws is often boring and difficult and there is no way to escape from them to an easy relief. His technology constantly allows him to escape from any responsibility as he sees fit and this instant access is an extremely irresistible temptation.
As an aside, I enjoy the show, but I don't really like a lot of the hardcore fans.
This also makes me think about the limitations of empiricism, which is a method (an important one) to be used in service of the powerful intuitions that created it. However in striving be as objective and ontological as possible, it can be the case that we lose sight of the 'what might be' to be replaced by 'what will be' static and certified. This is not to diminish the scientific methodology, which is vastly important to us and our survival as a species, but to a recognition of the limitations within ourselves and an uncomfortable reality that outliers, such as those same nebulous concepts I mentioned before, will most likely always be with us, as will the role that emotion plays in decision making.
No one seems to have stopped falling in love because we know how the biology works, or because it is boring due to others having also fallen in love.
The brilliant specifics of uniqueness are underrated and disregarded far too easily. There will always be a longing for what is not yet known, or what lies behind the obvious and I don't think we should shut ourselves off from this exploratory urge just because it isn't certain and cannot be measured, for it seems to drive all measurement and without it, I think would be an empty existence.
If that happens, then I'll join Rick.