AbdulAlhazred
Legend
In Classic Traveller there is a death spiral: injury deducts from your stats, and minimum stats are needed to gain bonuses, or avoid penalties, on making attacks; and losing END reduces your number of non-weakened blows and swings.
I can't remember how/if RQ handles death spirals - I'll look it up when I get home!
I don't even remember the END part TBH. You're right though, STR and DEX damage can reduce you to penalties. The truth is though you have 7 on average in each stat, and damage is usually on the order of at least 2-3 d6, and IIRC you cannot 'split' damage, you have to take it all on one stat (your choice which one) until it overflows onto a 2nd one. So the vast majority of the time in Traveller you get hit and you now have 0 in usually STR, and maybe you can still move around, sort of, but combat is right out anyway. The spiral isn't much of a spiral, its more of a steep ramp! Combat with primitive weapons is a bit less outright lethal than old-school D&D at low levels, but its still pretty brutal. Armor would help of course, but being a sci-fi game its sort of like "Oh, you have ARMOR, and the space pirates have PGMPs, RPGs, and Gauss Rifles...."