@x2boys good questions, and actually very relevant to anyone living with HIV. Apologies in advance - might be long!
HIV treatment has moved on massively over the years and is now generally very well tolerated. Sometimes there can be side effects, as with any drugs, but they tend to settle down. If they don’t then there is the option to switch to something else. My meds do not affect me although I remember one of the first ones I took causing a bit of nausea which disappeared as soon as I ate something. Some people have sleep problems which disappear when they take their pill earlier in the day.
I currently take 1 pill a day which needs some food with it - doesn’t matter how much, so I take it at supper. This has 3 drugs in it which is regarded as the “gold standard” of therapy. However some 2 drug regimens have now been, or are being approved, and shown to be non inferior (ie they work just as well) which I hope to swap on to. We talk about “drug toxicity” so 1 less is a good thing in my books. We get regular check ups for liver, kidneys etc so if the numbers trend in the wrong direction something can be done - treatment changed etc.
As far as life span goes, it really depends on many factors. As I mentioned upthread, most of us look after ourselves better than we might have. Someone who stops smoking after getting an HIV diagnosis has a chance of living way longer than had they not contracted it and continued to smoke.
It is thought that even with treatment, some low level inflammation exists with the increased potential risk of such things as cardiovascular disease, decrease in bone density, certain cancers etc. Hence the regular tests together with advice on how to mitigate this - healthy eating, regular exercise, alcohol in moderation etc.
There’s quite a lot to this subject. For example in resource poor countries - those when stigma, isolation, availability of care and treatment, ignorance, other untreated health issues etc exist, the outlook is not so good.
Looking at this from a personal point of view I had a pretty healthy lifestyle pre diagnosis (good BMI, don’t smoke or take drugs, rarely eat processed food etc) so haven’t changed that much. I’m on annual smears instead of 5 yearly due to possible increased risk of cervical cancer, I try to include more oily fish in my diet and I’ve now added a Pilates style class to the high impact aerobic one I do. I also take HRT in patch form as even though I don’t have menopausal issues as such it’s useful for bone health.
However I still intend to enjoy myself - eat chocolate, drink alcohol etc (- my one bugbear with my consultant who would prefer me to be teetotal 😟)