If one wants equipment wear, it can be done with only minor additions...
for example, armor: simply count the number of times one gets hit, and when it equals or exceeds the base AC, spend 10% of new cost for repairs or lower AC by 1.
For weapons, every time an attack roll is a 1 or 20, 1 wear point; when wear points equal or exceed max damage on the dice, reduce dice by one step.
The tracking isn't great, and I find wear unfun per se, but in some settings, it's well worth the extra minor math for the increased verisimilitude and/or pressure on the characters.
ANd remember: not all people want casual fun; some derive their fun from the adversities, and for them, it may be well worth it.