I spend my hard earned money on bags that will last. If something is trendy I wait for the style to trinkle down to the High Street, buy it at Zara and mostly am over it before the trend is over. Then put in on a pre loved site so it's not taking up space in my collection anymore.
I don't follow all the trends and I 5 piece. That means you buy 5 pieces per year (or season, whatever you like). Because I almost always look the same, the most visible way of variation is a new bag. Because I know some things don't have to last forever, I spend accordingly. But sometimes I just want to keep up with the Joneses.
I do have to say that quality is still a thing and some of the cheap zara bags I didn't want to let go off, are still looking very well after some years. Although I don't use those as an every day bag, off course.