How are you playing and for what purpose? If you have a group that is playing in living campaigns using standard modules that cannot be varied then I can see that you need a standard balanced party that can cope with a full range of standard encounters. If you are playing at home for fun with a single DM (or even your own several DMs) then the adventures can be modified to allow for the characters that the players want to play and the style of adventure they enjoy.
All fighters with no healing or magic? Fine, adjust the parameters accordingly. Remember that it is possible to do subdual damage, don't include any magic-using opponents or allies, allow time for natural healing, talk to people you meet rather than shooting first, use cover (that surprised my DM when I did it!), run away (I got XP for that!).
Finally, imitation is the sincerest form of flattery. If someone is copying your character concept you have clearly played it well and made it look fun.