I always feel like less of a man because I'm really ticklish. I mean I like being tickled and all, but should I still feel this way because I am really ticklish?
Ok, ok, I'll give a more long winded more in depth answer, though my first response was both comical and based on personal observations. Anyways...
Depending on what you mean by "really ticklish" could justify your feelings. Example, a poke to the side and you double over into a ball of uncontrollable giggling/laughing and with a bit more tickling you could be made to agree to do ANYTHING the ler wants regardless of what it is or you piss yourself. Then yes, to quite a few people you would be classified as "less" than a man. When really you would just be easy to manipulate/exploit or easy to humiliate.
Another, dynamic about a "manly-man" being really ticklish thus being less than a man. Has more to do with the "manly-man" is really just a guy who puts on a show trying to be perceived as an undisputable undeniable MAN!!! And tickling him is just an easy way to "damage" this façade even if it is for a short time. Or corner him so everyone who was there knows and he himself does too, making it harder for him to lie about is manliness.
Besides, there are lots of people of all genders who are ticklish to some varying degree. Are there people who tease with intent of playfulness or humiliation purposes? Yes, to all accounts. But, for the most part it comes down to how you perceive it and if you choose to try and change how you perceive it. And how you handle your ticklishness when tickled will affect how others will perceive your ticklishness to you. If they notice that you are insecure about it and get really defensive about it and not just physically, they will be more likely to tease you about it. But, if you treat it more as playful goofing around or not letting it get under your skin then any possible teasing will be short lived.
And there are females out there who do find ticklishness to be an attractive trait for someone they are interested in to have. That has already been confirmed by several known female posters above. And no not all females who like ticklish guys have to have a tickling fetish.
Now, about the "should I still feel this way?" My answer is no you should not, but my opinion is really not the point. You could try asking yourself "Am I ok with feeling this way about myself even though it is something I like?" If you answer "no" then you should slowly try to adjust how you feel about it. Sorry, but it wont happen overnight, but it is possible. If you are more of a logic type of person then you can try and use logic to rationalize why you don't need to view yourself as less than a man.
Oh, and why being ticklish is generally perceived as a "feminine" type trait as opposed to a "masculine" type. I would suspect it has something to do with a ticklish person at times would be described as "cute."