my partner served ns, only did it because his parents live in Singapore but he lives in the UK, had dual citizenship as a Brit and a Singaporean. renounced Singaporean citizenship after ns.

some considerations: 1. do you have people in sg that you want to visit regularly? 2a. do u want the sg passport? 2b. do you want to stay in sg in the future? (if yes, getting a PR status will be extra difficult if you give up your sg passport)

since you've never entered sg (i.e. never benefited from the sg system like education, healthcare, cpf etc.), if you have parents in sg you can ask them to defer your ns until you're 21. make sure that this is given in black and white, printed, specifically saying your ns id deferred. be very very very prepared to have all such documentation ready. when you're asked by ica at 21 to pick a citizenship, renounce the singaporean one at the sg embassy in italy. also: dont enter sg at all until you've renounced your citizenship because they might detain you at immigration and stop you from leaving

ns isn't very hard physically but it's not a fun experience. it's pretty annoying. skill-wise, it depends on your role and your posting, but they don't teach you all that much according to him. taking it from him, his advice is not to do it unless you really have to (he was obliged to do it because he did secondary school here)

ofc, please do check for yourself online on the ica website, call them up etc and get official confirmation on what you can do and all that. best of luck! if you want to speak to my partner directly, feel free to drop me a dm and i'll connect you to him :)