Yeah, I think it will come down eventually. And I think it will go up eventually. And then down. And then up.
Three big changes in the industry over the past oh 15 years:
1. Development of, and then opposition to, fracking. New drilling technologies created a huge glut of natural gas -- pipelines literally could not be built fast enough to handle it all -- and prices went way down. Now there is a lot of opposition, and the opponents have succeeded in preventing the construction of new pipelines, which is constraining supply, thus increasing prices.
2. Shift of demand to summertime in the south. Used to be natural gas peak demand was in winter for heat -- and that's still the case. However, the demand in the summer has grown significantly, to the extent that pipelines have changed where they send gas when in order to meet summer demand. More demand over the course of the year = more need for natural gas supply = see item 1 above.
3. The economy, in particular, the return of primary manufacturing to the US. Natural gas is used both as a fuel for manufacturing operations and as a feedstock -- it is a basic chemical component in a some chemical manufacturing operations. For a very long time, US manufacturers couldn't manufacture those basic chemicals cost-effectively in the US, because of the limited supply of US natural gas and the cost of importing natural gas from elsewhere. The fracking boom actually re-patriated a lot of this basic chemical manufacturing back to the US, because even with the lower costs of labor and equipment and such abroad, the low cost of gas from the fracking boom made it cheaper to manufacture those materials here than to manufacture them in cheaper companies and transport them here. Of course, that growth depends on there being a market for the chemicals that are manufactured, and the continued availability of cheap natural gas, so when the economy crashes or gas prices rise, so does the demand for natural gas for US chemical manufacturing.
The short version is that NG price are driven by a host of macroeconomic, political, and local factors. If you have a major cold snap in an area where natural gas supply is constrained by increased demand/no new pipelines, and your utility company is deregulated, then you're going to see a huge short-term spike in gas prices. If you live in an area with plentiful supply and milder temperatures, you're likely to have lower and more stable prices. If you're in an area with a regulated utility, you won't see wild swings in prices, but you'll still pay for those swings spread out over time, as the utilities have to cover their fuel costs. There's just too much playing into the equation to make a single accurate prediction across the country