Aww the poor thing! It's cute how he tries to prove to Lestrade that he's, I guess, "normal" but he really isn't, is he? That's what I think Lestrade likes about him anyway, is that he's different.
awwh what you said, was very beautiful. No Sherlock is not normal, but who is really normal? He is different but that does not mean he is wrong. I think Lestrade likes him the way he is and does not want to change him. That's what love and friendship is about - to accept the people who you care about and don't want to change them. ^^
That's how I feel about friends too. When I hear you say this I wonder if my friends ever tried to change me. A lot of people do try to change me, because they don't believe I'm doing things correctly. This is mostly my sisters. But they can't change me, no matter how hard they try.