Well, in my opinion, no one should laugh at another person for whatever firearm they may have. A Winchester pump would get the job done AT much MUCH less of a price. For the normal civilian, most don't need something like a Benelli, . . . which is used by those who are operators [military/police], but it all comes down to personal opinion.
Someone may absolutely hate the Five Seven pistol based upon their opinion. However, if that person absolutely loves Glocks [for example], yet I hate them, . . . should not mean that I should be able to make other people feel "stupid" for having a Glock. What I mean is. . . if I say, "anyone who buys a Benelli semi-auto when they could have a Mossberg pump is ridiculous", that is unfair of me, and is needlessly putting down another person.
I'm not saying that you did this, . . . . just to those "Five Seven pistols are just an overpriced 22 caliber pistol that is ineffective" types. To say, "I don't personally have faith in that round, but won't deride it or those who use it", would be a good statement, IMO.
All this to say, . . . forget what your friends may be "laughing at you" about [with what you own]. If it works well for you and you can make it pattern well, then it is a good firearm.