My last comment on this, since it would be a bit much to respond to everyone individually.
When writing
my post, I didn't expect that people on a military forum would be opposed to an increase in spending and wouldn't even see a reason to do it. Thus my post wasn't about the reasons, but about providing numbers because '15 years of 10% growth' doesn't say much for most people, except that it seems like a lot.
Because I didn't do it earlier, here's what you get with military spending increasing at the same rate as the GDP (which again we'll assume is 6% for 15 years). Everything in USD.
If it's 150 billion, 1.4% of GDP now, it's 360 billion, 1.4% of GDP in 2032, with total spending in that time 3.6 trillion.
If it's 215 billion, 1.9% of GDP now, it's 515 billion, 1.9% of GDP in 2032, with total spending in that time 5.2 trillion.
I'd like to reiterate that my proposals aren't anything extreme. The final numbers for military spending as share of GDP were 2.4%, 3%, 3.5%. Even the highest case is only marginally above the present American value.
It's more accurate if you switch Ferrari for a gun.
China has a
of eliminating poverty by 2020 (presumably absolute poverty, you can always have as much relative poverty as you want). Even if they don't succeed totally by 2020, in 15 years China will be closer to a developed country than a low income one.
The other way at looking at the difference between 2% and 3% (or 1.4% and 3.5%) is that the shares of GDP that stay untouched are 98% and 97%, respectively, clearly a small difference. The poor in China will stop being poor with a few more years/decades of fast growth. Additional government measures can make a small impact on top, but the major contribution is a growing economy. Otherwise, they should have simply eliminated poverty decades ago.
I've pointed out that higher military spending doesn't impede growth and development (take a look at
the examples and note that they were much higher than just 3% for most of the time; additionally, the first year that France and the UK went under 3% was 1995).
Several people made this point. However, military needs are decided by looking at possible threats and this directly necessitates
comparisons with other countries.
In a war, it can be all of them.
Summary of my thoughts
In the next 15 years, China will almost certainly have a larger economy than the USA. As the numbers show, 15 years of 10% growth of military spending is realistic. Specifically, if the current official figure of 1.4% is accurate, the final number is 2.4%, probably unobjectionable even for most in this thread.
China is modernizing and expanding its military (carriers, 055, 052D, 054, 095, 096, J-20, H-20, Y-20, Z-20, carrier aviation and so on). New systems are generally more expensive than old ones and they will be getting more of them, along with the costs of use and maintenance. Because it is financially possible, they should, in my opinion, target at least numerical parity with the USA. I won't go into the reasons here.
Like I wrote in the first post, I hope there's an increase in military R&D spending and number of researchers, as this is the foundation of military development (while admitting that I don't know the current numbers). I think there's also room for further large cuts to the number of soldiers.