I agree that immigration is important and even giving chances to people that are willing to completely assimilate, change culture and loyalty to the said country to eventually after XX years to become a citizen, but starting by saying f*ck your laws before even arriving is just blatant disrespect.
Illegal immigrants are not paying social contributions because the can't be hired legally, so they don't really contribute to the retirement issue, and very often, let's be real, they must resort to even more illegal schemes to get by because of restrictions having no-paper, it's hard to even get a SIM card, so even to get a phone, they'll need to commit a crime of some sort by stealing an ID.
I just don't understand how we can reach fairness which is extremely important with people that want to do the right thing and actually apply properly and assimilate.