Consider again,
since the distance between two consecutive primes is roughly
log(n) and the ratio of this distance to
n is asymptotically zero by the Prime Number Theorem, the distance between the last prime and next prime as illustrated is also very narrow. And by
Bertrand–Chebyshev Theorem a prime exist between n and 2n. We have,
the space below the last prime >n, is full of prime numbers. So, as n→∞, it is easier to find p+q=2n, although not necessarily certain.
The point is as n→∞, Goldbach's Conjecture is easier to satisfy.