I'm not surprised that this is the case (I've made that same decision myself). But there are some apps that I just done understand: airline ticketing apps, theme park apps, etc. How is handling offline usage not ofne of the first requirements.
Gmail does not cache email attachments so ticket attachments are always iffy at busy venues. I usually just screenshot the ticket QR code now so I have it no matter the network situation at a crowded event.
