In my experience as an IPTV noob only using IPTV for a week, the sports streams are WAY more stable (clearer with less buffering) than using the free reddit streams online
Iptv is just a paid version of the mess that's scattered over a few apps.
100% yes
it depend.
for sport event I am able to get some link that are HD so restream from the tv channel web. So if you don't know any good link you need iptv otherwise no.
For tv channel i watch a few channel which i get them through several sites with no problems. Arab channels most are available on youtube live or on their website. For english channel i use ustvgo.net and ustreamix.com
Depends on your provider for example I have 2 providers 1 for movies and the other i use only for sports because they have good streams ( stiptv )
Only you can answer that. Do you feel the need to get more multimedia live? What is it you feel you don't have now that IPTV will give you?