Well..."officially" (nothing I do or say is really "official", it's all "opinion"...I would tell you not to install XP, since I don't see any logical points for installing an unsupported version of Windows that is sorely outdated .
As for my experiences...I still have a triple boot of XP, Win 7, and Win 10 on this system. I haven't experienced any problems that most will tell you that are inherent in the risk of instaling/using XP today. My one disconnect is that IE 8 is not acceptable as a browser...so I use Firefox.
XP is the O/S I boot into and use the most...of the three on this system. The sky has not fallen...it's not likely to fall, IMO...with one of the reasons being that XP is no a prime target of anyone interested in creating/disseminating malware...Win 7 is the most used version of Windows today and it should continue to be primary target of those who derive joy from trying to frustrate Windows users with malware/adware and such.
Whether the sky falls on my XP install or not...it's the RISK that users should be concerned with when concerned with system vulnerability. Someone conceivably COULD target XP in some extraordinary manner, even though it's a low-reward target for the malware misanthropes. I mean...16 or 17 years is a long time...for anyone wanting to do bad things to XP users...I'm sure that was part of Microsoft's thinking in abandoning XP..."it's not worth the time/attention of anyone".
If you insist on living "dangerously", as I do...I suggest that you
a. Be mentally prepared for everything to go wrong on any day. That means implementing a backup strategy that involves a clean install or use of a backup at a moment's notice, with no crying on your part.
b. Run a tandem of O/Ses, for the sake of familiarity...in preparation for the day/moment when you need to switch to either a linux version or another Windows version. Do not put yourself where you are running XP because it is the only O/S that you are familiar with...and you are too lazy to familiarize with an alternative.
I also have a refurb Optiplex 755, with Win 7 installed on it...it's my backup system for when things go awry with this system with the multiboot.
Edited by hamluis, 15 May 2017 - 06:03 PM.