Makes sense. Though i bet even in 30 years a 2000 lumen flashlight will still be impressive versus household flashlights
LOL
I doubt that.
LED lights are becoming more and more common, and Home Depot, etc, are carrying much MUCH more powerful lights today than they did 10 years ago.
In 30 years, LED may not even be the state of the art, and something else may have replaced them in flashlights.
IE: A "Household Flashlight" might BE
over 2,000 L in 30 years...there are already 1,000 L versions on the shelves, and that at least doubling that in 30 years is expected based merely on the current pace of advances. They may decide to top off lumens at some point in favor of longer run times, etc....but what new technology develops in the meantime will help to dictate these directions.
30 years ago, (~1984), how many lumens did a household flashlight produce?
30 years later, how many lumens can an off the shelf household flashlight produce?
In ANOTHER 30 years (~ 2044), how many lumens can an off the shelf (If we even need shelves by then...?), household flashlight produce?
Its far more likely that in 30 years, the battery technology will have moved on, the emitter options will have evolved, the form factors will have evolved, and your antique 2,000 L heirloom will not be seen as impressive in output, but, may be viewed as an example of what grandpa used to have to use to see at night with in the olden days.
IE: They will see a 30 year old light the way you see 30 year old lights now.
Enjoy them NOW...while they ARE the best you can use.
I retire lights from my rotation when I fond something that does a better job....and if someone wants to see a battered and well used example of an antique flashlight later, that's fine. I don't want to buy a light and save it for a future museum (Some people might want to of course...but, not me)