it's never a bad idea to try growing your own food. i've been able to add a lot more fresh veggies to my diet even with "container gardening" in a rented apartment & a balcony.

if you've got your own house & a garden, plant as many native trees as you can. some of these can provide free food too ofc, but also, trees are great for shade & staying cool during heatwaves, they're great for flood prevention, they hold the soil together & prevent soil creep, etc etc.

so yeah, i suppose climate change & access to food are my main concerns. we can live without a lot of today's tech, but we can't live without edible food, clean water, and breathable air. 😅