I do quite a bit of prepping, and do definately feel the pinch doing it.
All the money I used to squirrel away now goes to prepping.
Not sure there will be any such thing as retirement for my Gen X age group anyway.
But it is quite scriptural to prepare for thin times when you have a little extra (For example, recall how Joseph saved Egypt by squirreling away 7 years worth of food, etc and then came a 7 year drought). And this example has always been touted as wisdom, not fringe behavior.
Here is what I have accomplished in the last 2.5 yrs (And I have 3 toddlers and a stay at home wife, and have averaged about $80k during that time):
1) 10 rifles and/or handguns (tactical all of them)
2) 10k rounds of various caliber ammo
3) 1 year of dry bulk foods packed into buckets w myler inserts and O2 absorbers
4) 1/4 acre garden and all canning supplies, books, pressure canner, grain mill, etc
5) Katadyn Gravidyn water purifier
6) 500+ oz silver bullion
7) Liquidated 401k (and made more on silver to offset the early distribution tax)
8) 8K WATT GENERATOR and 50 gal gas
9) complete camping supplies from tent, military cots, sleeping bags, camp dishes, etc.
10) Bug out bag w about 45 lbs supplies; 150 items+
11) 3 month supply canned foods
12) 1 month supply water (have pond in back yard for purifier)
13) Planted 4 fruit trees (1 plum, 2 apple)
14) Male Black Lab (Great w Kids, but excellent alarm and home defense tool; free at shelter)
15) Converted neighbor into prepping, and now I have help
16) Lots of kerosene lanterns ans kerosene for light
etc.
The point is that if you are motivated, you can get pretty far in a short time.
And the best part is that if a collapse never happens, we will eat the food, hunt with the guns/ammo, camp with the supplies, retire with the silver, etc.
Nothing in the prepping goes to waste if I gamble wrong.