I apologize if I seemed rude, it was not my intention.
The beauty of this game is to be a thousand different games for a thousand different players. I do not care to be macho in the PVP by destroying the ships of other players. I just want to impersonate a character, buy the ships that I like aesthetically and functionally and try them in the PVE, pretending to be a capsuleer capable of destroying whole pirate floats.
I do not care about becoming rich, getting into corporations etc. I just need to earn enough to buy what I like and what I want to try, so the time I spend (which anyway does not seem to me much to finish level 4 missions) is not important.
Simply I missed the advantage of weapons and ammo tech 2 compared to those tech 1 but now it is clear to me thanks to your answers.
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