Not very long..
1980 - born
1984 - see computers for the first time
1985 - see one of Finlands first A1000s
1985-1986 - got my first C-64 around that time
1989 - first A500
1996 - Pentium 120
1998 - first A4000
And there end the milestones, after 1996 I started accumulating all sorts of Commodores and Amigas and PCs..
Seriously, that A500 was my only machine until 1996 - didn't even have a hard drive, only one external floppy, 512/512k RAM Action Replay 3 and KS 2.04. :-)