Q3. Ooof tough question. I guess my top 5 destiel fanfics are:
1. Love Him In Your Sleep (Love Him Always) by almaasi
2. The Last Moonlight Serenade by gankyourdarlings
3. As Snow in Harvest by nasri
4. The Feline Perspective of a Guilty Conscience by almaasi again
5. Ehhh this is a shameless self promo BUT I'd like to include my own fic on this list as it's the only one I've written so far and I loved every second of that process. It's called Drive, Darling. I wrote it for a DCBB a couple of years ago :)
Q7: Tumblr made me fall in love with Destiel. I binged the first 7 seasons and then joined Tumblr the summer before s8 aired. I was 18 and considered myself strsingt. You guys made me realize that I could ship two people of the same gender together and just a year later I realised I was actually bisexual. Who knew!
But ultimately I think it was the chemistry between Jensen and Misha that really drew me in. The way Dean and Cas just /work/ together is undeniable. Their relationship is a lightning in a bottle. Unparalleled and unmatched.