Diseases have been with us since forever.
Pandemics are a mathematical certainty given enough time. We had the "Spanish" Flu in 1918. (Which didn't start in Spain but we're stuck with the name.) We were due another one.
Most likely explanation is it started in a market in Wuhan, China.
If Covid was developed as a bioweapon to specifically kill of old people, I ask you this: why were old people the main group every country went out of their way to protect?
Lockdowns were mainly for their benefit, and other vulnerable or immunocompromised people.
And this wasn't just in a few places; it was global. The world never agrees unanimously on literally *anything*. But literally almost every country on earth agreed on this and had measures to stop Covid, from democracies to dictatorships, who usually never agree on anything. That's one hell of a conspiracy. Did every single world leader get together in some secret lodge and put aside their differences for the first time in human history?
If you really wanted to kill off old people just to save on pensions, this seems like a very inefficient way to do it.
Or maybe, nature is nature and viruses constantly mutate and try to kill us because damn, nature, you scary, and we were due another major pandemic almost exactly 100 years after the last one. Wherever the virus started (whether man-made either deliberately or released by accident by some incompetent Wuhan lab, or because it crossed over from other species like bats or pangolins or whatever at a so-called wet market, which is a thing that does happen), the fact remains that the whole world then implemented measures to contain it, specifically favoring old and vulnerable people.
If you just wanted to kill off old and weak people, there are much better and faster ways, trust me.
CMV.