Jehovah God has always chosen representatives to get his message across.
With the Flood, it was Noah. If you ignored him, you died in the Flood. It wouldn't matter if you didn't like his personality or his looks or the way he was building the ark or how slow he was in building the ark, if you didn't listen, you lost your life.
With slavery in Egypt, it was Moses. If you ignored him (like Pharaoh), you died in the plagues or at the hand of God. It wouldn't matter if you didn't like his attitude, his background and family history, his seeming inability to carry on a decent conversation or his "foreign wife", if you didn't listen, you lost your life.
With the Jewish nation, it was Jesus. If you ignored him, treated him like he was crazy (which his own brothers did), thought he was lazy, not earning a decent living, didn't strive for the "better education", didn't settle down and start a family, didn't value what you value, always hanging around the "everyday" people, always trying to teach (as if he had the answers), if you didn't listen, you lost out.
So today, what about today?
Jehovah is motivating honest hearted ones to do their best in representing him, to encourage others to learn, to meet together for comfort and instruction, to obey his standards as they best understand them, and be willing to change and modify if a matter gets clearer, if we don't listen, we will lose out, and could very well lose our life.
Plain and simple.
We either listen to his organized people who are loyal to him and represent him to our benefit, or we are not in his favor.
The Israelites were commanded to NOT have altars in their backyards to offer their sacrifices. They had to GO to Jerusalem and offer their sacrifices through the God-selected priests for them to have value in his eyes.
Were all the priests God-fearing and always righteous? No. But even so, that was NOT an excuse for the Israelites to say they would not sacrifice as Jehovah outlined. The backyard was never an option.
So if a congregation has problems, opting out for our "backyard" is not a God-approved option if we want to maintain his favor.
One of Jehovah's Witnesses