Actually, this is the way it's becoming these days. It's not "odd" at all.
It seems like every girl in our age group wears full underwear these days. The "thong" saga seemed to end in the late 00's. I don't know why but I saw it all the time in college, girls with visible, thick panty lines.
The age of young women wearing sexy lingerie has died down. It's not big deal though, wear what you want to wear.
Not at all. I never liked thongs much either. I actually have a few pairs of the older vintage really sheer pairs of granny panties, like all the women wore back in the 50's. They go great with other period correct things, like corsets, garter belts and bullet bras. They're super comfy and for those that have ben lucky to see me in them-I've had surprisingly few complaints!
Not weird. Feeling comfy is way more important than how it looks anyway. I'd say you're doing something wrong if someone sees your underwear ;) And your boyfriend should like you regardless of what underwear you wear.