Just contributing to an older post. Well yes I guess many of us fap vegetarian style, as it's not messy and anytime you can have your fix as opposed to having lube and the clean up that comes after that.
Affecting future sex really depends on you, and I'm not sure what you meant by it? is that you prefer fapping over real sex? Most men or many men do fap even before sex or to keep themselves active, I do most of the time and I enjoyed it as a different dish from real sex, and it gives me more time to enjoy sex when you have actually emptied a barrel earlier, so I take it as a starter before the main meal, unless you want to show the girl that you've got alot of juice and to some unloading a truck load of spunk of the girl is a satisfaction.
Skin health? been fapping for over 30 year or so, 90% dry and sometimes 10% of it to try out new lubes in the market especially those silicone ones. That said, using lube to fap requires much more time.