When I was growing up, there were approximatley 50 wells on our land, many of which produced gas. None of it was uasable for domestic purposes without processing. There was one drillers shack on the place with a gas stove plumbed in to an oil well that also was putting out gas, and it was truly dangerous, because the flow was inconsistent and the raw gas was variable. Several times I damn near blew my head off lighting the oven in that thing. Condensate would accumulate in the lines, and you would get a slug of HIGHLY flamable liquid along with the gas.
To use the old, non-technical terms, there is 'sweet' gas, which is more or less pure methane, and there is 'sour' gas, which has any one of many impurities in it, up to and including hydrogen sulfide, the most poisonous naturally occuring substance on the planet.
My maternal grandfather was a tool pusher back in the day, pre-WWII, in west Texas. One of the rigs he was responsible for was in a poison gas field. He drove out to that rig one fine morning and found the entire drilling crew dead. They had hit an H2S pocket in the night, and it killed them all.
There is still, contrary to clean air laws and other environmental concerns, probably more gas just released into the atmosphere or flared than there is going into pipelines. We had one piece of land where a pipeline company put in an iron oxide 'sponge' intended to take the H2S out of the gas before going into the line. It lasted about 2 years before they decided it was not cost effective.
There is a Shell Oil field out around Monahans, Texas that to this day has road signs that say, "WARNING: POISON GAS"
So, if you are fortunate enough to live in a place that has 'sweet' gas, and if it produces at a constant rate and pressue, you are blessed. But it is the exception rather than the rule. And, by the way, it now costs about $50,000.00 to drill a shallow hole, i.e., 5000 feet or so. $100,000 is the benchmark for a producing hole, with completion costs.