for me it was others telling me "the grass is greener" on XYZ device, so i end up buying near every brand of everything, the ipad3 and 2x android tablets i got were a novelty at first tho that wore off when i found that most apps were unuseable garbage (but from market reviews WERE good at some point before they broke or partially worked).
Other apps ended up great for a day or 2 then slowly it sank in they were minor time wasting apps with no long term use.its also why i have pretty much every brand of console/pc/tablet/phone going just because of others telling me their great so i get them then get bored when the noveltys wear off.
crap i own that i can remember offhand.
tablets: ipad3, 2x touchpads, 1x 8" android tablet, 1x 7" android tablet
phones: pre3, lg optimus1 p500 (did try cm10 recently, still a crap phone), some old samsung clamshell phone.
consoles: ps1, slim ps2, ps3, xbox360, wii, wii-u, amiga cd32(sx32), 1x broken sega megadrive
handheld consoles: gb.adv, 2x psp, 1x vita, 1x ds, 1x gp2x
laptops: 1x rock direct extreme 64, 1x novatech generic 2.4ghz laptop
Computers: 1x x86 PC, 1x A500(broken), 1xA600, 1x A1200(normal), 1x Amiga 1200(603ePPC/040-towered-proper-broken), 1x broken C64c(cream version), 1x C64(charcoal/black version).
of all that the only stuff i regularly use and gravitate back too is the ps3, a psp, and the touchpad, the rest are just novelty rubbish i barely use, after a while of using the newer devices i just cant see what most people see in other new devices like iphones/ipads etc, it usually boils down to games tho, and ive yet to play something on those that didnt bore me after a few days.
my android tablets arent bad but im mostly using them as book readers or to play c64 stuff on via frodo, the ipad3 is just a very expensive tv using netflix/tvcatchup, its on a rail/holder stuck to the side of my pc and just sits there as a fixed tv. Everything else tablet wise, its the touchpad tbh.
NOTE: i only give the ipad a brief thumbs up because its the only tablet that lets me play some amiga/c64 golden oldies i enjoyed such as pinball fantasies/dreams, spy vs spy(proper crap tho), battle squadron (still bloody amazing), Giana sisters (not bad), Ascendancy (pc game but tablet version sucks majorly).