Just wondered if anyone here *only* uses their Classic Amiga for all computing and nothing else.
I did until 2004, but then I got opportunity to buy 2nd hand Pegasos1 and it replaced my good old A1200 as my main computer. Lately it has been replaced with Mac mini G4 with MorphOS. In any case, I'm still using Amiga programs and Amiga compatible operating systems fully. I think it's still close enough to original question

The a1200 was the same I bought as a new in 1994. It got upgrades from memory card with fpu to 030, tower, Zorro2 with CV64/3D, Amiganet ethernet card, 060, SCSI (with CD-RWs, DATs, external towers etc), Delfina Lite, MediatorZIV, Voodoo3, PCI NIC, TV-card, USB 2.0 etc. It is still working and I give it occasional use with net, coding, demos, games etc.
I got it online first with modem to BBS'es in 1994 and to internet in 1995/1996. Then I bought network card and got it connected to 10Mbps static line in 1998 (that's right). I ran ftp server etc on it 24h/day for years. IBrowse was a lot more compatible browser in those times than it is today and Amiga had some of the best internet apps, like AmIRC, DOpusFTP, DCTelnet etc.
For a hobby I've been testing other systems too, like Sun's Sparc Stations and SGI Indy... and of course bunch of free PCs during the years (from 120MHz P1 to 2,8GHz P4) for testing with Linux, Windows, BeOS, QNX etc. But I've never paid anything from them and they never got into real use and I've given most of them away after a while anyway. All my data and use have been on Amiga always. Amiga has been the serious computer for me, others are just for hobby or curiosity.
I think it would be kinda hard to keep up with most things... I think you'd have to have a PC/Mac/Linux to do some basic stuff like online banking etc...
I never needed other computers for that. Online banking has always worked here in Finland with IBrowse, and it still does, and I still use IBrowse for it

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Basically I could do basic stuff I need pretty well with classic Amiga still, but with MorphOS I can do all. Including movies and modern browsing etc, where classic Amigas just are too underpowered.