I've never had sexual sides from anything and I've run just about everything with and without test (deca alond, dbol alone, fina/dbol no test). I really tend not to like test. I've run it alone and even at fairly high dosages, I don't get much anabolic activity and mainly sides and a fairly good CNS stimulation. I'd put my gains on 400mg of deca up against a gram of test any day but not everyone responds this way. It works very well in a stack at 200-400mg weekly for me though but as the sole or major compound - it blows. I can't really complain though, I can gain very well off just about anything else even at marginal dosages.
I've watched a lot of people run dbol alone and I've never heard of anyone getting major sex drive loss. I mean, you read this board and get the feeling that if you aren't running test with everything out there your dick will curl up forever but that hasn't been the case for me nor anyone I know of using dbol and given the fairly large amount of pre-1995 literature out there regarding dbol use, I never saw it even referenced before these boards. So I'd venture, there might be some real effect in some individuals due to an inability to use the dbol molecule adequately but serious sexual sides from dbol alone are either very rare or largely placebo.
Like in everything else, knowing what works for you is the key. It doesn't matter how things work for everyone else (except if you believe your body is totally defying human chemistry - in which case you need to come down to earth). People's responses to these things have a fairly wide varriance and it's not like there aren't a ton of other factors at play.