Review Detail of Geremia in My MCV and Doomsday

This story has a huge problem, the character design and i mean 90% of all the character. Let's start with the MC, is dumb i read many novel and this is the dumbest mc possible, like when he need to make the upgrade for is car he doesn't think at all... i mean the frist mutated beast he kill weighs 10tons but he regard the mechanical arm as "useless" when this "uselees" arm can lift 20tons, can't you just smash everything with just that? mutated zombie, wall, enemy, clean all obstacle, and carry stuff for you? instead he chose that upgrade just when he find some obstacle on is road 100s chapter later... another upgrade that he demand useless is a beam that can store material for him, he upgrade it just to use it once, ONCE! i mean when you find a enemy car or a tank can't you use it to steal some important component and make it useless? can't you stole their bullet? maybe it won't work but can you at least try! (in my country we have a saying "dont search the hair in the egg" and i normally dont do it, but this "egg" as too many "hair"). I have explained the mc and you can image or find out the rest of the "main" character, im too lazy... Now let's talk about the rest of the World, i mean i understand is the apocalypse and the evil side of mankind is showed, but can we be a little more realistic? evry where he goes if is not commanded by the military or a female character is full of female slave. I mean i dont understend, is chaina special? how come there isn't any decent person? i mean we are talking about the start of the apoclypse if it was year later then i could understand but as soon as it start is like in everybody mind: "**** yes let's go raping" it's dosen't make sense at all... Overall if you can a poor character design and a world background that dosen't make much sense and you like apocalyptic story with a "system element" you can try read this... **: actually there is lot more that i dont like but 90% is related with the mc dumb choice, i mean i understand you dont want the girl to sleep on the floor but why waste a nucleus (or more then 1 since he also added space) just for one bed??? is like 150+ chapter that im going crazy! just buy an amaca for christ sake! is dumbness know no rival! and the frist ability that chose from the lab should make him a "genius", more like a "special kid". At least you could say that is aware of is weakness.... well... he could have chose to be immune to cut and bite with is frist ability and after the 2° evolution immune to bullet... but a little "smarter" with better reflex should do... i mean is not a bad choice but when he was choosing was like "i need to increase my survivability outside the car"... at the and he chose something that make him more op inside the car...