You have it backwards, don't tell me that "I don't understand." I'm 100% sure I understand the game mechanics more completely than you, else we would not be having this discussion. I've been hovering around 5% - 6% for past several months. I always kept 30% soldiers, 60 planes, and 20 nukes. I could watch nations that had several thousand less infrastructure than I pass me up in game percentage and acquire nukes. They're not half as strong as I am, even with my 30% soldiers. But somehow they pass me in Nation Strength (an unreliable factor in a nation's actual strength at the time) and purchase nukes. In four to six clicks, I could boost my NS by eight thousand and boost myself up to about 1%, from 5 - 6%. How is that fair to me, and to those I passed up so easily? Why should I force my nation to spend more on military to inflate my own NS, just to keep up with much weaker nations than myself? With the change, I'm now resting comfortably at 3.5% with peacetime soldier count (now at 60%), a nice average of before.
Yes, nukes might be harder to acquire now because you can't inflate your own NS. Deal with it. Secure tech deals and donations, purchase wonders on time, and purchase infrastructure. This will take time, the same exact time it took all the other nations to do so. The effort you put into your nation directly correlates to what you will get out of it. If you don't want to wait, purchase the Manhatten Project wonder. That's why it's there. You can't have your cake and eat it too all the time.