Is technological ascendancy an impossibility for human kind? I have an issue with both premises and how you support them.
"For the premise 1 to be false, non controlled counter measures on a global scale must be implemented to prevent such scenarios, which is very unlikely given the fact we have nukes but no effective countermeasures. (again thirst toward rule and security prevails, offense over defense)"
The effective counter measure to nukes is the possibility of offense (M.A.D.). It's pretty hard to call this ineffective, considering the world hasn't been destroyed by nukes since their creation. Also, consider the fact that we live in the most peaceful time in human history WITH the most powerful weapons.
There's also a problem with how you characterize human nature here. Even if you Disregard the future possibility of "ascended sensibilities", we cannot logical say that human nature is a DEFINITIVE boundary to the perfection of AI being used for the creation of a Utopia. Perhaps there is a psychological angle to this that can dig into.
"The path to technological ascendancy heavily depends on available raw resources and available energy, it's a time game, our planet earth is limited in resources, to break this limitation exploitation and colonization of space is necessary."
Let's talk about some problems with premise 2. You provide no explanation as to what the limit of exploitation on the planet Earth actually is, so I fail to see why the colonization of space is necessary to achieve technological ascendancy. The colonization of space Helps, but I cannot see why it is a necessity to the problem at the present time in human history. However, we can definitely get into the technical side of this issue.
Overall, this is a really good question and it seems possible that we can achieve technological ascendancy. I share the same fears present in both premises, but these fears don't turn me off to the idea that technological ascendancy is possible, for the reasons I listed above.