Why do things want to lower their energy? Like if we consider a container of gas molecules as a system, Why does it want to lower its energy?

I have read that always more spontaneous events are favored. So Gibb's Free energy should have a negative value i.e ΔG=ΔH-TΔS&lt;0. So Entropy Contributes towards more spontaneity. But Randomness contributes towards more entropy and having more Internal energy causes more random motion.
So overall more energy should contribute towards more Spontaneity which is favored in nature. But we observe that things tend to lower their energy. Please Explain.

Edit: Well I guess I might have found the answer - 
When a system lowers its energy, ΔH becomes negative ( due to it being exothermic) so at moderate temperatures, the entropy contributes to lower spontaneity but ΔH is more negative so ΔG becomes more negative(more spontaneous). While at high temperatures, endothermic processes are favored (ΔH positive)
Thermodynamics is so beautiful!
Maybe my shortest answer ever:

Energy is loosely a measure of how disturbed a system it is from its natural, grounded, non-excited state, and it is from here that the "less energy, more stable" thing comes from. Your question reverse-engineers that.