[moonrab]

Based on your argument, foreigners who work in sinkie land long enough should become citizen since past memories are the last precious part of their life.

But how many foreigners here actually become citizen?

We are talking about our ancestors, Pioneer, Merdeka and Majulah generations. 

Are you a Singaporean? If yes, your grandparents and parents are still a foreign workers status in Singapore? 
I will be surprised if that is the case.
Or you are a foreigner yourself, never understand our Singaporean feelings for our parent's sacrifice in Singapore. 

Don't mix up today's foreign workers with our ancestors please. Both are immigrants but in different era. 
Our ancestors came, give up their motherland citizenship, survive and work hard to prosper for their future generations in Singapore. The journey is call nation building. Propelled Singapore from a fishing port into a modern city.

Today's foreign workers came to Singapore mainly hoping to earn more money. 
Some may love Singapore in the process, applied for Citizenship. 
Many are still not ready to give up their bigger motherland passport. But wanted the higher salary in Singapore. 
The whole process is much more complicated. 
More options for both foreign workers and Singapore to contemplate. 

Moreover, Singapore population already hitting the peak at 6 million. We doesn't have much room for more foreigners citizenship applicants. Therefore naturally, Singapore will be very selective in application approval. 

Totally different from our ancestor’s situation.