Women are attracted to penises, and the bigger the better.
An interesting post explains how women react to size and alternative ways of sexual satisfaction
A penis becomes attractive when it’s attached to someone who’s attractive in other ways, or when it’s about to bring someone pleasure. Women may prefer a hung guy for a hookup but will settle for an average sized guy for a LTR.
Guys with diminutive dicks may need to be more creative with their hands and tongue. A youtube video discusses size attractiveness.
Size in male-male relationships
Men who have sex with other men view size differently than men who have sex with women.
Justin Lehmiller noted that the size of gay men is greater than straight men.
Men with below average penises were significantly more likely to identify as “bottoms” (anal receptive) and men with above average penises were significantly more likely to identify as tops (anal insertive). …men with below average penises fared significantly worse than other men on three measures of psychosocial adjustment.https://tinyurl.com/58pehf86
Size needed for prostate stimulus. Many guys are discovering the pleasure from the stimulation of their prostate. Pegging or use of anal toys or anal sex are the more popular methods used. Below, a diagram of the location of the prostate gland. It can be reached digitally (i.e. with fingers), or with various toys.
Prostate toys vs. anal sex.
There are 2 schools of thought: toys have greater flexibility than pegging with rigid dildos. Others claim that anal sex is more physically satisfying.
Though prostate stimulation and anal sex can both involve anal penetration, the two sex acts are totally different. Internal prostate stimulation takes a softer touch and involves more precise movements and smaller implements, such as fingers or small toys, rather than dildos or penises. Because a penis or dildo doesn’t have as much range of motion as smaller toys or fingers do, it’s difficult to effectively massage the prostate with them.https://tinyurl.com/552smc6u
If guys are looking for PIA (penis in anus) with other guys, length and girth are important. Length is needed to reach the prostate. Girth is useful for stimulating the anal opening which has a concentration of nerves.
Quora has a discussion of size considerations for anal sex.
Psychology of size
Male anxiety may be driven, at least in part, by penis size preferences that men assume women have. The fact is that men who are dissatisfied with the size of their penis report more problems with their sexual health and have lower sexual self-esteem. (1)
For some, size concerns can become a Body dysmorphic disorder (BDD) with a symptom of small penis anxiety (SPA)
men [with BDD] are absolutely adamant in their conviction that their genitalia are too small. They insist that they have measured themselves and seem inordinately focused on such measurement. They are similarly convinced that they are incapable of pleasing a woman via intercourse, although they are, by and large, not able to cite much evidence to show that this is true. In fact, many of these men admit to having had few or no sexual experiences. There is an implication that some of the few sexual experiences had by some of these men were with prostitutes. Many may have had only a single sexual encounter. Others state that they avoid sexuality entirely as they feel deeply ashamed of their penis size. All of these men affirm the belief that women would universally treat them with contempt if they were to see them nude.https://tinyurl.com/mrxyr7mx
Men with BDD are more likely to have erectile dysfunction and less satisfaction with intercourse than controls but maintain their libido.
Men with BDD and SPA were more likely than the controls to attempt to alter the shape or size of their penis (for example jelqing, vacuum pumps or stretching devices) with poor reported success.https://tinyurl.com/2p8tapay
“I’ve talked to men who have never even approached anyone for a romantic relationship because they don’t believe anyone would be interested in them because of their size. I’ve talked to men who have attempted suicide because of their size.”https://tinyurl.com/bdfm8bnn