You are wrong about criminal behavior. I'm in a high crime area. Gang's, drugs, prostitution, as close as my nearest corner.
By that standard, should we trash ethnic Russians? Ethnic Chinese? Any number of people who fled (or who's ancesters fled) countries rife with corruption, abuse, etc etc?
What is the "culture of corruption" they are "not abandoning"? Is it any different from any other immigrant group? No. You had large numbers of poor people immigrating to the U.S. in large numbers. Many eventually settled successfully but while some brought with them poverty and crime, others were forced into it through circumstances in overcrowded tenaments. What is happening today is no different then yesterday.
I can't argue for or againist your personal experiences with or opinions on immigrants - it's not something debatable. But you can look at actual statistics as a baselline.
For example - on use of "the dole":
from a report by the Cato Institute
Illegal aliens usually do not obtain public services lest
they be detected and expelled by authorities. The INS-Westat
study of formerly illegal aliens legalized in 1986 under the IRCA
program (U. S. Department of Justice 1992) shows substantially
lower rate of use of welfare among this group than among natives.
But because interviews are the source of the immigrant data,
while official records are the source of the native data, it is
quite probable that the rates of use by immigrants are
understated.
Another survey (DaVanzo et al. 1994, 46) of an undocumented
immigrant group probably as needy as any--Salvadorans--shows much
higher rates of use: AFDC, 14 percent; food stamps, 22 percent;
WIC (women, infants, and children), 33 percent; unemployment
compensation, 8 percent; worker's compensation, 4 percent. For
the undocumented population as a whole, however, in which half or
more of the recent cohorts are more middle-class immigrants who
are visa-overstayers rather than border-jumpers, it seems
reasonable to expect perhaps half these rates.
These numbers - even if understated - do not support a claim of "coming here for the dole"