Cooks know thyself! If you're not the kind of cook who makes stock, having a bunch of chicken wing tips in the freezer will not make you the kind of cook who makes stock. It'll just make you into the kind of cook who stores your leftovers before you toss them.
it definitely took a conscious effort for me to build it as a habit. but I would suggest it's definitely worth it, if you're buying store bought stocks or broths. it's part of my weekend food routine. (Including going out the greenhouse garden and pulling in the stuff that's come ready. I spend maybe 2 hours on the garden, it's aeroponics and the stuff is being forced, so I'm constantly shifting things through a grow cycle. And another hour tidying up all the produce... including stuffing carrots in a freezer and pulling now-sweetened carrots out.)
for anyone whose like... "I don't have TIME"... I feel you. One option instead of keeping an eye on a simmering pot is to use a slow cooker. I find carrot/celery/onion to be a solid base to work on, but I also like adding garlic, ginger, apple peels (adds pectin, and a nice sweet flavor,). I also like adding in mushrooms that need to be used up (or left over stems,)
So... the vast majority of my vegetables, I grow aeroponically in a greenhouse out back... there's no sand to speak of.
That said... you should wash your fruits and veggies.
Plain running water, rubbing or scrubbing with a clean brush. no need for soap or 'produce wash". if you have a salad spinner.... that'll simplify washing and drying salad greens.
For soft fruits, just hand wash them gently under flowing water and trim away bruised sections. For things that are more firm, you can get a little rougher, including going up to a scrubby brush.
store bought, whole mushrooms... absolutely need to be washed in water. That "grit" or "sand" is sterilized manure. foraged mushrooms... well I'm not brave enough for that. in any case, as long as you're not literally soaking them, mushrooms don't absorb water. They just have a TON of water in them naturally. (i wasn't a big mushroom fan. mostly because my mom would cook them horribly. bleck. Anyhow. what my GF does is a quick, thorough wash in a bowl of cold water to get the shit out/off and then goes to a towel to pat dry and then lets them airdry a bit before use.
(the manure is safe to consume. it won't kill you. won't even make your stomache upset, but, uh, it tastes awful in soups and stocks, and it's unpleasant and gritty. Also. it's still literally shit.) (pre sliced is already cleaned and ready to rock.)