I spent too long at school and university in laboratories to have anything other than an instinctive handwashing reflex if I've been involved in any activity that might conceivably, possibly resulted in me picking up anything one might describe as contamination. Microbiology labs are the best training for this - it's not the possibility of contaminating yourself that matters so much as that you might contaminate what you're working on and render your efforts to date worthless.
So electronics attracts no more or less handwashing, for me, than any other activity.
About the same amount as after any other activities. You are far more at risk from bacteria, greases, resins, and any number of other things than from the lead.
Idiots. You missed idiots from the list, by far the most dangerous thing in my opinion.
Lead fear, like radioactivity fear is promulgated by folks who have no idea what numbers are, or how to use them. Since they don't have this tool the choices become binary. It is either good, or bad. Lead which is bad when put into the air by the ton as a byproduct of combusting leaded gasoline, or in paint which might be a problem for anyone who actually eats the paint gets translated into "Lead is bad".
I'm pretty much convinced that the harm done to your health by worrying about the things people, particularly the Daily Mail
1, tell you to fear as threats to your health does more harm than all the ostensible threats put together.
[Editted to add:] I can smell the Hasselback potatoes baking in the kitchen over which I have just poured a mixture of
- Olive oil - apparently supposed to make me live forever.
- Butter - apparently this will kill me.
- Rosemary - full of Volatile Organic Components which surely are the devil incarnate
As to what the Daily Mail would have to say about the sausages, peas,
Italian carrots and gravy that is going with these I dread to think.
1 The Daily Mail is a tabloid, right wing British daily national newspaper catering to the middle aged of middle England which can't go a day without publishing a headline that "X causes cancer", or some other left field, baseless, and marginal health claim or health fear. Political rather than medical problems are all blamed on immigrants and foreigners (Daily Mail code for anyone who's not got pasty white middle English skin). Substitute your local equivalent.