That means you must play a whole another character from scratch to play the game another time with diferent aproach
Yes, several depending on how many alts you create. It's not as if the minute you create another character you can make bazookas and combat armor to buff your combat/main character.
When you have multi alts you play practicly the whole game only once having "personal slaves" to do everything for you playing for real only with one character ones with limitless resources.
I don't see it that way, it's essentially playing several different characters, exploring everything the game has to offer for only a *slight* advantage.
Where you see here decent replayabilityy?
Depends on how many alts you have.
Life in postapocaliptic wasteland is harsh, brutal, and very tough, only smart using of character resources and combining it with others should guarantiee better chance getting to 21 level
I agree, so why make arbitrary rules like no-alts? This game isn't for kids.
This game isn't diablo or quake when character is an equivalent of an small army.
As have been mentioned earlier, even the random PA drops didn't do much to make characters unstoppable. I could have a 100 alt support team and would still die as often as joe-one21-blow.