Soldering? Soldering for electronics is almost all automated now, and with most electronics being surface-mount it's mostly done by stenciled solder paste and reflow. The exception is for the few remaining items that can't be done that way, such as when wires need to be soldered to PCBs (though here for high-volume stuff they usually use connectors because the wires can be assembled with connectors elsewhere, and then the wire harnesses simply plugged in during final assembly).
Are you talking about some other kind of soldering, such as for stained glass or plumbing? Stained glass with real lead and real glass is pretty rare these days, much more rare than high-quality woodwork, and mainly for hobbyists. Plumbing soldering is done with a blowtorch and isn't all that difficult, but worse, copper in plumbing is being replaced by plastic which doesn't use soldering, but rather press-fit connectors. So don't count on that as a long-lived profession either (the soldering part I mean; plumbing itself will be around as long as humans have biological bodies and need to use water for cooking, hand-washing, toilets, and bathing, it'll just be easier as new technologies replace legacy ones).
Are you talking about some other kind of soldering, such as for stained glass or plumbing? Stained glass with real lead and real glass is pretty rare these days, much more rare than high-quality woodwork, and mainly for hobbyists. Plumbing soldering is done with a blowtorch and isn't all that difficult, but worse, copper in plumbing is being replaced by plastic which doesn't use soldering, but rather press-fit connectors. So don't count on that as a long-lived profession either (the soldering part I mean; plumbing itself will be around as long as humans have biological bodies and need to use water for cooking, hand-washing, toilets, and bathing, it'll just be easier as new technologies replace legacy ones).