Rabeinu Yonah in Shaarei Teshuva quotes the gemara that says that with regards to mitzvas tzitzis, if one does not fulfil it then “???? ???? ????? ???? ?? ??? ??? ?? ??? ????? ? ? ? ?
????? ????? ?????? ??? ??? ??? ????? ????.” which means that HKBH reserves the punishment for a time of troubles for the Yidden RL because this person who does not wear tzitzis doesn’t appreciate and desire to keep this mitzva.