From my research i would say the downside's outweigh the benefits. I just think that having your penis stretched out like that past the natural state of engorgement was never intended and anything that alters your natural blood flow to the penis should be used with caution. As you know from your research and experience as pumper you have understood the dangers and proceeded to do it properly, resulting in an increase in size. But not everyone can stay focused on using it properly and and may end up abusing what it was intended for... I wouldn't believe everything u read on the internet either.. The soul purpose of a pump is an erection aid but these companies know - there is a huge market of men out there who wish to be bigger and they aren't going to discourage you from buying their product. Its all about how they can make money. Of course, they arn't going steer u away by posting un-success stories or show you disgusting pictures of bloated mangled up cocks. The know the dangers of the product and will warn you about mis-use but it is entirely within your discretion how you use it? They wont care or be responsible (if) anything goes wrong. Go ask a doctor about using a pump and im sure he will tell you to avoid using one if your intended purpose was to try and make your penis bigger. There is no 'safe' way to increase penis size and maintain its original functionality. Yes, go ahead by all means because each is to their own and they can do whatever they like to their body. ....But a question arises to me?. In a sexual situation, can you perform without the tube? And its not like u can carry a pump around wherever u go!? I presume u would be reliant of it once u have been constantly stretched out to a bigger size? If thats the case, the idea of being dependent on such a device doesn't appeal to me and would rather settle for what I've got. Not to be a buzz killer or anything but in the reality of it all - the danger of it, the reliability issue's and un-natural look overrule the fantasy of wanting to be larger.