Because Marie kondo

Hi Mummies, I'm 14 months pp and have started to keep all LO's clothing and accessories. Would like to know your thoughts about storing my maternity bras away for next pregnancy or should I just continue using them? They are all wireless nursing bras so it's either I wear them out as sports bra and get new ones next pregnancy OR I keep them nicely boxed up to use in 2 years time. I'm currently using normal bras now that I'm emptied out and no longer pumping.