Pros and cons of cycling to work and back 5 days a week?

Clothes are my main problem (10 miles each way), jacket on back of seat, trousers in a draw (try to keep three pairs at work to avoid the forgetting to bring some in) shirts on suit bag in corner of office... I've ten shirts so need to bring ironned one's in once a fortnight (well I've got 12, but two shirts are crappy emergancy shirts!)... used to get the tube (also worked as a break when I wasn't used to the commute) but now I just gaffer tape them to my back pack!

But worse than all that is going out after work... either be the freak in lycra or cycle home in a suit and then have to bring it back the day after...

My system:

I've got maybe a dozen shirts hanging up in the office.
These get dry cleaned near the office as and when required.

Trousers are non-iron jobbies. I throw them in the machine at home, hang them up to dry, roll them up and carry them in when required.

Shoes stay in the office.

Socks and jocks are in a bag carried in daily

Towel stays at work under desk and I swap each week.

Ride to work in cycling kit getting as filthy as I can, grab work clothes, shower, work, change back into cycling kit (which sits in bag or bucket under desk) ride home.

Going out I just add jeans, t-shirt, maybe sneakers to my socks and jocks.. or just go casual for the day..