I'll chime in with the "if it makes you feel better about yourself, do it" thing.
However! I'm also going to add this: even if you lose as much weight as you want, don't put all your hopes on it changing how you feel about yourself. I've lost 95 pounds in the last 18 months (all me, no surgery or pills, thank you) so that I am down to 110, which is right in the middle of the healthy weight range for my height. But what no one knew to warn me about was how horribly hard it can be as you're going down, not from a work perspective, but from a "this isn't real" perspective. One week, your jeans are so huge they fall off you when you walk and you're feeling awesome about it, so you buy a smaller pair, which only has your body looking like it did twenty pounds ago while it tries to be in smaller, tighter pants. I spent an awful lot of time seeing myself at my top weight, even forty-fifty-sixty pounds down, because things still sat in the same places, just smaller. I still do. Logically, the numbers on the scale tell me I did it. I can see it in pictures. I can tell by the clothes I simply cannot wear. I can feel my body and know I did it. But to look in the mirror? Hell, no. I'm still way up there. So know that if you do lose the weight, it won't solve how you see yourself. Losing weight isn't the work you'll have to do there. Seeing yourself as who you are, that'll be the harder part.
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However! I'm also going to add this: even if you lose as much weight as you want, don't put all your hopes on it changing how you feel about yourself. I've lost 95 pounds in the last 18 months (all me, no surgery or pills, thank you) so that I am down to 110, which is right in the middle of the healthy weight range for my height. But what no one knew to warn me about was how horribly hard it can be as you're going down, not from a work perspective, but from a "this isn't real" perspective. One week, your jeans are so huge they fall off you when you walk and you're feeling awesome about it, so you buy a smaller pair, which only has your body looking like it did twenty pounds ago while it tries to be in smaller, tighter pants. I spent an awful lot of time seeing myself at my top weight, even forty-fifty-sixty pounds down, because things still sat in the same places, just smaller. I still do. Logically, the numbers on the scale tell me I did it. I can see it in pictures. I can tell by the clothes I simply cannot wear. I can feel my body and know I did it. But to look in the mirror? Hell, no. I'm still way up there. So know that if you do lose the weight, it won't solve how you see yourself. Losing weight isn't the work you'll have to do there. Seeing yourself as who you are, that'll be the harder part.
Either way, good luck.