Population is already in the negative....
i don't think that "its not popular" ......its just that its a multifaceted dilemma.... some people obviously cannot have children, and some people have trouble finding partners because of social issues, etc - so that already cuts a certain part of the population out of procreating.... but most importantly the people who are having children are having much smaller families than in previous generations without looking at the big picture.....
they have smaller families for one major reason, they do not believe they can afford a big family.... this is very general, but true for the most part..... this line of thinking will only get you in deeper trouble though with how a modern economy is run..... i do think some of it is selfishness in a sense, but i think a majority of the time its just fear that: "hey i cant afford anymore kids, how am i going to feed this child, etc..."
i remember reading an article among ethnic europeans and the amount of children people wanted compared with the amount they were having was drastically different.... for instance, the amount of kids wanted by by europeans would make the birthrate on average 2.3 in all european countries, well above replacement and good for our type of economy.... but the real birthrate in Poland is around 1.2....we'd need to almost double the amount of children we would be having.....
the goal should be trying to get people that are already having children to have more, and not convince people who simply dont want them.....
but again its multifaceted, for me i think a better standard of living and security will most likely increase the birthrate in Poland to about 1.7-1.8, but you have to get to at least 2.1 to have minimal growth because of infant mortality.....
its hard to judge things like these though because things always change, revolutions take place, etc... the trends that are happening now are not set in stone and things do change, so i am not too worried..... a short birthrate decline is not the worst thing either considering pollution and the size of our country..... but i really dont think its optimal to have a continuous decline right, we will be screwed that way :(
like you said some people dont like having children, and maybe its partially genetic in a sense.... so if all the people who don't have children stop procreating, only the people who like having kids will be left right in the next generation to pass their genes on.... knowing some Poles that i do, especially the older generation, if contraception was availabe at the time they were having kids i dont know if they would of had children in a sense you know..... before you had to have a family, it wasnt really a choice..... now it is.....
Bringing in immigrants is a good idea only when they are capable and suitable. What I mean is that the immigrant should have real intention to be a Pole in his future (and for his generation). He must have the will to work, live and see the future in Poland. He should be stable (mentally), and have basic manners. That is to say, 'a good prospect', a good human being.
living in Canada i know lots of different people from all over right, immigration here is a motto considering the history of the country..... i like it in a sense, but for Poland it would be different since there is a ethnic population and the people coming in are foreigners..... in Canada everyone is a foreigner in a sense right.... so its a bit different....
i really dont know what advice to give Poles who live in Poland on who they should let in in a sense.... to me i think i could accept anyone from anywhere aslong as they were good people, etc, but i guess that is my experience living in Canada.... but im not sure Poles would agree with that type of thinking and would maybe rather let in people from Ukraine and Belarus that are more similar in terms of culture.....Canada in a sense is an ever changing culture built on many different immigrant groups, you cannot really compare that in a sense.....
one thing i will tell you though is that in terms of business, its easier to do with non Poles..... my dad loves doing business with Canadians, Persians, etc..... its something about doing business with your own among Poles that doesnt work out too well for some reason... at least that has been my experience, its like both sides are very stingy and cheep..... i wish Poles had a deal like the Jews, where a Jewish person providing the service or goods would give the buyer a deal..... with Poles its both trying to get a deal....
cheers :D