@Cappuccinowithonesugarplease
The generic answer is no you are not too old but you need to take a really objective look at the pros and cons before jumping in, I’m thinking mostly about issues such as basing and rostering, especially if you have family commitments.
A few examples:
How is rostering performed, do you get any choice or not, predictable pattern or not (e.g. 5/3), are rosters stable once published, what are the chances of unscheduled nightstops away from base?
Are you going to working out of an airport near home which you can travel to/from at unsocial hours?
If the answer is “no” and you don’t live near the airport is the company going to provide accommodation for any nights off at base during blocks of short haul work (answer will almost certainly be no)? If not you are going to need to find and pay for something like a B&B near the airport?
Is there any standby commitment and if there is will you be able to do that from home or will you end up camped out in a B&B or hotel near the airport?
There’s lot more beyond this and a lot of the answers to things like the above will be airline specific (for example rostering and standby/reserve commitment) so you need to cautious about generic answers. It’s best to get info from people actually currently working at any airline(s) you are interested in working for.
Good luck.