I hear this from time to time, but data paints a radically different picture. What you describe is only the case for sub-Saharan immigrants who are just a tiny, tiny minority of the inmigrants coming to Spain. Most inmigrants come from:
1-Romania (for which Spain is obviously not in the path to any other country)
2-Morocco (the vast majority of whom arrive legally since the late 90s)
3-UK (and contrary to popular belief, only 21% of them are over 65 years old)
Then, the largest component of immigration is from the former colonies, due to the shared language (so, again, not being used as a vector)
All of this data is available online on the INE (national institute of statistics)
My opinion is that the world seriously needs a new refugee convention to prevent economic migrants from abusing the refugee system. The governing idea should be that you can't use refugee status to move from a poorer country to a significantly richer one. If you're a genuine refugee then moving to a safer country with similar per-capita-GDP is something you should be happy with.
Meanwhile, Yazidi and Syrian refugees will have to pay thousands to smugglers or scale barbed wire fences to enter a safe country.
Spain is just wanted due to the proximity to Africa and a lot of African immigrants/refugees using this vector.
> There are simply better ways of dealing with high immigration demand than "dump everyone into a pot regardless of education/experience/viability/urgency and randomly select a few".
We Germans deal with asylum seekers by putting > 2.500 people in camps designed for 1.500 MAXIMUM occupants (Munich, "Bayernkaserne" camp), blocking them from work and giving them free food and 140€ per month as pocket money.
Needlessly to say, that ain't fucking enough for non-food expenses in bigger cities, and what happens if the only thing they do is drink, smoke and fight (as asylum seekers you must not travel around the country, you have to stay in your processing city!) is basically a fucking violation of human dignity.
Of course it also leads to vast criminality - not just the fighting between asylum seekers themselves, but also massive amounts of theft, pot dealing (hello Berlin Görlitzer Park) and other criminality. In order, Nazi-parties and other right-wing extremists gain excellent popularity with "Kick em out" messages.